This user guide describes the WaveDriver 100 Potentiostat/Galvanostat with EIS system.
The target audience for this user guide is a professional scientist or engineer (or student of science and engineering) with a basic knowledge of scientific measurement, data presentation, and electrochemistry. Practical aspects of making electrochemical measurements using the WaveDriver 100 instrument are discussed, and a terse introduction to Electrochemical Impedance Spectroscopy (EIS)
theory is also included.
A small portion of this guide is dedicated to the subject of using the AfterMath software package
to control the WaveDriver 100 instrument. This information about AfterMath is limited primarily to the subject of installing the software, connecting to the instrument, and verifying that the system works correctly. More extensive descriptions of how to use AfterMath software may be found in the Software category of the Pine Research Knowledgebase.
This publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of Pine Research Instrumentation, Inc.
All trademarks are the property of their respective owners. Windows is a registered trademark of Microsoft Corporation (Redmond, WA). WaveDriver®, WaveVortex® and AfterMath® are registered trademarks of Pine Research Instrumentation, Inc. (Durham, NC).
The WaveDriver 100 instrument is not designed for use in experiments involving human subjects and/or the use of electrodes inside or on the surface of the human body.
Any use of this instrument other than its intended purpose is prohibited.
1.5Harmful or Corrosive Substances
The operator of the WaveDriver 100 should have prior experience working in a chemical laboratory and knowledge of the safety issues associated with working in chemical laboratory. Electrochemical experiments may involve the use of harmful or corrosive substances, and the operator should wear personal protective equipment while working with these substances. At a minimum, the operator should wear the following items to avoid contact with harmful or corrosive substances:
- Eye protection (safety goggles, face shield, etc.)
- Laboratory coat (flame resistant and solvent resistant)
- Solvent-resistant gloves
- Closed-toe shoes
Additional personal protective clothing and equipment may be required depending upon the nature of the chemicals used in an experiment. A complete discussion of chemical laboratory safety practices is beyond the scope of this user guide, and the reader is directed to a chemical safety bibliography for additional information.
L’opérateur du WaveDriver 100 doit avoir une expérience préalable de travail dans un laboratoire de chimie et la connaissance des mesures de sécurité associées aux travaux dans un laboratoire de chimie. Les expériences en électrochimie peuvent impliquer l'utilisation de substances nocives ou corrosives, et l'opérateur doit porter des équipements de protection individuelle lorsqu'il travaille avec ces substances. Au minimum, l'opérateur doit porter les articles suivants pour éviter le contact avec les substances nocives ou corrosives:
- Protection des yeux (lunettes de sécurité, masque de protection facial, ect.)
- Blouse de laboratoire (résistante au feu et résistante aux solvants)
- Gants de protection résistants aux solvants
- Chaussures fermées
Des vêtements et équipements de protection individuelle supplémentaires peuvent être requis en fonction de la nature des produits chimiques utilisés dans une expérience. Une discussion complète des pratiques de sécurité de laboratoire chimique est au-delà de la portée de ce guide de l'utilisateur, et le lecteur est dirigé vers une bibliographie de sécurité chimique pour des informations supplémentaires.
1.6Service and Warranty Information
For questions about proper operation of the WaveDriver 100 system or other technical issues, please contact Pine Research directly.
If the WaveDriver 100 system or one of its components or accessories must be returned to the factory for service, please contact Technical Service (see above) to obtain a Return Material Authorization (RMA) form. Include a copy of this RMA form in each shipping carton and ship the cartons to the Factory Return Service Address (below).
|FACTORY RETURN SERVICE ADDRESS
|Pine Instrument Company
ATTN: RMA # <RMA number>
104 Industrial Drive
Grove City, PA 16127, USA
|The WaveDriver 100 Potentiostat/Galvanostat with EIS instrument (hereafter referred to as the “INSTRUMENT”) offered by Pine Research Instrumentation (hereafter referred to as “PINE”) is warranted to be free from defects in material and workmanship for a one (1) year period from the date of shipment to the original purchaser (hereafter referred to as the “CUSTOMER”) and used under normal conditions. The obligation under this warranty is limited to replacing or repairing parts which shall upon examination by PINE personnel disclose to PINE's satisfaction to have been defective. The customer may be obligated to assist PINE personnel in servicing the INSTRUMENT. PINE will provide telephone support to guide the CUSTOMER to diagnose and effect any needed repairs. In the event that telephone support is unsuccessful in resolving the defect, PINE may recommend that the INSTRUMENT be returned to PINE for repair. This warranty being expressly in lieu of all other warranties, expressed or implied and all other liabilities. All specifications are subject to change without notice.
|The CUSTOMER is responsible for charges associated with non-warranted repairs. This obligation includes but is not limited to travel expenses, labor, parts and freight charges.
Labels located on the back panel of each individual WaveDriver 100 include information about the make, model, and serial number of the instrument. These labels also indicate any certifications or independent testing agency marks which pertain to the instrument (see Figure 1).
||These labels indicate that the instrument has an Environment Friendly Use Period (EFUP) of forty years and that the instrument should be treated as recyclable electronic equipment at the end of its useful life.
||Serial Number Label
||This label indicates the model and serial number of the instrument and includes a machine-readable bar code.
|WaveDriver systems which bear the ETL/Intertek mark are listed by Intertek to UL 61010-1 (issued 11-MAY-2012; Ed. 3), CSA C22.2 #61010-1 (issued 11-MAY-2012; Ed. 3), and IEC 61010-1 (issued 10-JUN-2010; Corrigendum 1: 11-MAY-2011). Intertek is a Nationally Recognized Testing Laboratory (NRTL) recognized by the United States Occupational Safety and Health Administration (OSHA).
||European CE Mark
|WaveDriver systems which comply with one or more EU directives bear the CE mark. See the "CE Declaration of Conformity" attached to the end of this user guide for more details.
Figure 1. WaveDriver 100 Instrument Markings
For purposes of uniquely identifying a particular instrument, there is a label on the back panel of each WaveDriver 100 instrument that indicates the model number and the serial number. The serial number is also encoded with a machine-readable barcode on the same label (see Figure 1).
The relationship between the model name and model number for the WaveDriver 100 system is described below (see Table 1). The model number has the format “AFPNXY
” where N
is a single numeric digit (either 3 or 4), and X
are either blank or uppercase alphabetic characters. Pine Research part numbers for various components of the system (such as power cords, cell cables, and accessories) are described in more detail later (see Section 5
and Section 7
Table 1. WaveDriver Instrument Model Numbers and Model Names
The WaveDriver 200
is similar to the WaveDriver 100, but it is a bipotentiostat/galvanostat (meaning it has two working electrode channels, unlike the WaveDriver 100 which has only one). The WaveDriver 40
is a bipotentiostat/galvanostat that may be used to perform traditional electroanalytical experiments but does not perform Electrochemical Impedance Spectroscopy (EIS) methods.
Special icons are used to call attention to safety warnings and other useful information found in this document (see Table 2, Table 3, and Table 4).
Des icônes spéciales (voir Tableau 2, Tableau 3, et Tableau 4) sont utilisées pour attirer l’attention sur des avertissements de sécurité et d’autres renseignements utiles disponibles dans ce document.
|STOP: For a procedure involving user action or activity, this icon indicates a point in the procedure where the user must stop the procedure.
|ARRÊT: Dans une opération impliquant l’action ou l’activité d’un utilisateur, cette icône indique l’étape où l’utilisateur doit arrêter l’opération.
|NOTE: Important or supplemental information.
|REMARQUE: Renseignements importants ou complémentaires.
|TIP: Useful hint or advice.
|CONSEIL: Astuce ou conseil utile.
Table 2. Special Icons used in this Document
(Tableau 2. Icônes spéciales utilisées dans ce document)
|WARNING: Indicates information needed to prevent injury or death to a person or to prevent damage to equipment.
|AVERTISSEMENT: Indique les informations nécessaires pour prévenir les blessures ou le décès d'une personne ou pour éviter d'endommager l'équipement.
|ROTATING SHAFT HAZARD: Indicates information needed to prevent injury or death to a person due to a high-speed rotating shaft.
|DANGER LIÉ À LA ROTATION DE L’ARBRE: Indique les informations nécessaires pour prévenir les blessures ou le décès d'une personne à cause de la vitesse élevée de rotation de l’arbre.
|RISK OF ELECTRICAL SHOCK: Indicates information needed to prevent injury or death to a person due to electrical shock.
|RISQUE DE DÉCHARGE ÉLECTRIQUE: Indique les informations nécessaires pour prévenir les blessures ou le décès d'une personne à cause d’une décharge électrique.
Table 3. Safety Warning Icons used in this Document
(Tableau 3. Icônes d'avertissement de sécurité utilisées dans ce document)
|CAUTION: Indicates information needed to prevent damage to equipment.
|ATTENTION: Indique les informations nécessaires pour éviter d'endommager l'équipement.
|RISK OF ELECTROSTATIC DAMAGE: Indicates information needed to prevent damage to equipment due to electrostatic discharge.
|RISQUE DE DOMMAGES ÉLECTROSTATIQUES: Indique les informations nécessaires pour éviter d'endommager l'équipement à cause d’une décharge électrostatique.
|TEMPERATURE CONSTRAINT: Indicates when an operation or use of equipment is limited to a specified temperature range.
|CONTRAINTES DE TEMPÉRATURE: Indique lorsqu’une opération ou un usage de matériel est limité à une plage de températures spécifique.
Table 4. Other Safety Warning Icons used in this Document
(Tableau 4. Autres Icônes d'avertissement de sécurité utilisées dans ce document)
1.9Safety Labels (Étiquettes de sécurité)
Specific safety warnings are found on labels attached to the instrument (see Figure 2).
Les avertissements de sécurité spécifiques suivants se trouvent sur les étiquettes apposées sur l'instrument (voir Figure 2).
Figure 2. Safety Warning Labels on Back Panel of Instrument
1.10General Safety Warnings (Avertissements de sécurité généraux)
The following safety warnings pertain to general use of the instrument. More specific safety warnings are found in later sections of this document which pertain to particular operations and procedures involving the instrument.
Des avertissements de sécurité plus spécifiques se trouvent dans les sections suivantes de ce document, concernant les opérations et les procédures particulières relatives à l'instrument.
1.11Electrostatic Discharge Information
Electrostatic discharge (ESD) is the rapid discharge of static electricity to ground. An ESD event occurs when two bodies of different potential approach each other closely enough such that static charge rapidly passes from one object to the next. Sensitive electronics in the path of the discharge may suffer damage. Damaging ESD events most often arise between a statically charged human body and a sensitive electronic circuit. The human body can easily accumulate static charge from simple movement from one place to another (i.e., walking across a laboratory).
Potentiostat users must always be aware of the possibility of an ESD event and should employ good practices to minimize the chance of damaging the instrument. Some examples of good ESD prevention practices include the following:
- Self-ground your body before touching sensitive electronics or the electrodes. Self-grounding may be done by touching a grounded metal surface such as a metal pipe.
- Wear a conductive wrist-strap connected to a good earth ground to prevent a charge from building up on your body.
- Wear a conductive foot/heel strap or conductive footwear in conjunction with standing on a grounded conductive floor mat.
- Increase the relative humidity in the air to minimize static generation.
The WaveDriver 100 has been tested and found to be compliant with the European EMC product specific Standard EN 61326-1:2013 for immunity and emissions. The immunity standard includes testing for ESD to IEC 61000-4-2:2008.
1.12Hazardous Material Information
Disclosure tables in both English and Mandarin are provided (see Table 5 and Table 6) which detail information pertaining to the list of hazardous substances classified under the Restriction of Hazardous Substances Directive (RoHS).
Table 5. WaveDriver 100 Hazardous Materials Disclosure (English)
Table 6. WaveDriver 100 Hazardous Materials Disclosure (Mandarin)
Purchase of a WaveDriver 100 instrument includes a license to use the AfterMath software package
to control the instrument and analyze data collected using the instrument. Pine Research understands that the WaveDriver 100 is used in a laboratory environment where multiple computers are present and where data acquired using one computer might be analyzed using a different computer. The software license describes how AfterMath may be used with the WaveDriver 100 in a laboratory with multiple computers. You can find the AfterMath software license here.
The WaveDriver 100
is a benchtop instrument that is controlled by a personal computer (via a USB cable) using the AfterMath software package
developed by Pine Research. The WaveDriver 100 may be operated as a potentiostat or a galvanostat. The instrument is most often used to control the potential (or current) at a working electrode located in an electrochemical cell along with a counter electrode and a suitable reference electrode. Popular DC electrochemical test methods (such as Cyclic Voltammetry,
, Pulse and Square Wave Voltammetry,
etc.) as well as AC methods (such as Electrochemical Impedance Spectroscopy) may be performed using the WaveDriver 100.
The working electrode features three potential ranges (±2.5 V, ±10.0 V and ±15.0 V) and eight current ranges (from ±1.0 A down to ±100.0 nA), making the WaveDriver 100 suitable for use with a wide variety of electrochemical cells.
The AfterMath scientific data analysis and instrument control software developed by Pine Research is included with each WaveDriver 100 instrument.
AfterMath offers several important benefits:
- Instrument Control. When started, AfterMath automatically detects all compatible instrumentation attached to the computer and provides complete control over each instrument. AfterMath can simultaneously control multiple instruments, and multiple experiments may be queued on each individual instrument. Even as new experiments are queued or running in the background, data acquired in previous experiments may be manipulated by the user.
- Flexible Plotting. AfterMath has a powerful "drag-n-drop" feature that allows traces from one plot to be quickly and easily copied and moved to other plots. Preparing an overlay plot from several voltammograms is straightforward. AfterMath provides precise control over line sizes, point markers, colors, axis limits, axis labels, and tick marks. One or more text boxes may be placed anywhere on a plot, and the text may be formatted with any combination of fonts, font sizes, or colors as desired.
- Scientific Units. Unlike graphing software designed for business and marketing applications, AfterMath is designed with scientific data in mind. Proper management of scientific units, metric prefixes, scientific notation, and significant figures are built into AfterMath. For example, if an operation divides a potential measured in millivolts by a current measured in nanoamperes, then AfterMath properly provides the result as a resistance measured in megaohms.
- Data Archiving. A unique and open XML-based file format allows data from several related experiments to be stored together in one single archive file. Keeping related experiments together in an archive file eliminates the need to manage multiple individual data files on the hard drive. The internal archive hierarchy can contain as many subfolders, reports, plots, notes, experimental parameters, and data sets as desired.
- Tools and Transforms. Flexible tools can be placed on any graph to precisely measure quantities like peak height and peak area. Multiple tools can be placed on a plot, and all such tools remain exactly where they are placed, even if the data archive is saved to a disk and reloaded at a later time. Fundamental mathematical operations (addition, multiplication, integration, logarithm, etc.) can be applied to any trace on any plot.
The WaveDriver 100 instrument offers the following electrode control modes: potentiostatic (POT), galvanostatic (GAL), open circuit potential (OCP), and zero resistance ammeter (ZRA). Electrochemical impedance spectroscopy (EIS) may be performed in either potentiostatic or galvanostatic modes. Uncompensated resistance (Ru) measurement and compensation is available using both DC and AC techniques.
2.3.1WaveDriver 100 Potentiostat/Galvanostat with EIS Specifications
All product specifications for the WaveDriver 100 can be found at the link provided here:
2.3.2EIS Accuracy Contour Plot
The WaveDriver 100 Accuracy Contour Plot can be located on its product specifications page.
A detailed description of accuracy contour plots and how they are obtained can be found here:
2.4Standard Electrochemical Methods
The WaveDriver 100 potentiostat together with the AfterMath software package
can perform many electrochemical techniques. Further descriptions about how to configure and execute these techniques can be found in AfterMath software documentation.
The WaveDriver 100 potentiostat system, as shipped from the production facility, includes all parts, cables, and software necessary for its initial use (see Table 7).
||WaveDriver 100 Potentiostat/Galvanostat with EIS
||USB Flash Drive
||Contains AfterMath software, drivers, and license files
||General purpose cell cable with six coaxial electrode cables and one instrument chassis connector (see Section 5 for details)
||EIS Calibration & Dummy Cell
||A network of test and calibration circuits used to calibrate and verify proper instrument operation (see Section 2.8 for details)
||Input Requirements: 100 to 240 VAC, 1.4 to 0.7 A, 50 to 60 Hz; Output Power: 24 VDC, 5.0 A; Power supply (included) has a C14 type input connector compatible with a variety of international power cords (sold separately, see Section 7)
||Interface (USB) Cable
||Communication cable between computer and WaveDriver 100 (USB type A male to type B male)
Table 7. Main Components Included with WaveDriver 100 Potentiostat
The front panel of the WaveDriver 100 has three LED indicators, the power switch, the cell cable port, and a logo indicating Pine Research as the manufacturer of the instrument (see Table 8). The three LEDs indicate power, communications activity (USB), and overall instrument status. Various colors and blink patterns are used by the LED indicators (see Table 9).
||LED Indicator Lights
||LEDs indicate status of the instrument
||Controls whether power is “on” (|) or “off” (⭘)
||Cell Cable Port
||Provides connection between instrument and cell cable
Table 8. Front Panel of the WaveDriver 100 Potentiostat
||When the power LED is not illuminated, the instrument power switch is in the “off” position (or the power supply is not providing power).
||When the power LED is solid yellow, the power supply is providing power to the instrument and the power switch is in the “on” position.
||When the USB LED is blinking (or flickering), data transfer is occurring between the instrument and the computer.
||When the USB LED is not illuminated, no data is being transferred between the instrument and computer.
||slow blinking green
||When the status LED is green and blinking slowly (one second illuminated, one second not illuminated), successful communication has occurred between the instrument and the AfterMath software, and the instrument is presently idle (i.e., not performing an experiment).
|fast blinking green
||When the status LED is green and blinking quickly (half second illuminated, half second not illuminated), the instrument is performing an experiment.
||When the status LED is orange and blinking, the instrument is performing a self-test (immediately after being powered on), or the instrument is waiting for the AfterMath software to establish initial communication with the instrument.
|solid or blinking red
||When the status LED is red (either blinking or solid), there is a serious problem with the instrument. Contact Technical Service for assistance.
Table 9. Overview of WaveDriver 100 Potentiostat LED Indicator Lights
The back panel of the WaveDriver 100 features several input and output connections to facilitate connection to other instruments and devices (see Figure 3 and Table 10 below). Pinouts for the two control ports (labeled “B” and “C” in the “CONTROL PORTS” box on the back panel – see Figure 3) are also provided (see Figure 4). Control port B is specifically designed to control an electrode rotator, while control port C is a non-specific digital control port.
|Number in Fig. 3
||BNC female, ±10 V differential input, 313 μV resolution, 20 kΩ impedance, 0.2% accuracy
||BNC female, ±10 V bipolar output, 313 μV resolution, 0.2% accuracy
||DC Common Terminal
||Banana binding post (black) that provides a secure connection to DC Common (signal ground)
||Banana binding post (metal) that provides a secure connection to the chassis of the instrument
||A low voltage (24.0 VDC, 5.0 A) power input connector
||USB jack (type B) for computer communication
||BNC female, TTL compatible
||BNC female, TTL compatible
||Rotator Control Port B
||3-pin terminal block connector for rotator control – includes analog signal ground, digital rotator enable signal (open drain – TTL compatible, +15 V max), and analog rotation rate control signal (±10 V, ±2.5 V)
|Digital Port C
||9-pin D-Sub connector that includes digital signal ground, two digital output signals, and two digital input signals
Table 10. WaveDriver 100 Back Panel Connector Descriptions
||Analog rotation rate control signal
||Digital signal output 2
||Analog Signal Ground
||Digital signal output 3
||Digital rotator enable signal
||+5 V digital output
||Digital signal ground
||Digital signal input 2
||Digital signal ground
||Digital signal input 3
||Digital signal ground
|Figure 4. WaveDriver 100 Control Ports B and C Pinouts
2.8Dummy Cell Description
A dummy cell is a network of known resistors, capacitors, and inductors that can be used to test and/or calibrate a potentiostat to ensure that it is working properly. The dummy cell included with the WaveDriver 100 is called the EIS Calibration & Dummy Cell, and its details and description can be found here:
Setting up the WaveDriver 100 system in a laboratory consists of three basic steps: (1) physical installation, (2) software installation, and (3) system testing and cell cable calibration. The entire process usually requires about sixty minutes. The physical and software installation steps are described in this section (below), and the system testing and cell cable calibration procedures are described in the next section (see Section 4
The WaveDriver 100 is a benchtop instrument designed for use in a typical laboratory environment. Physical installation involves positioning the instrument and the computer that controls the instrument in a suitable location and connecting the instrument to a source of electrical power (i.e., the AC Mains) and to the computer via a USB cable.
The instrument should be placed on a sturdy lab bench or table in such a way that there is unobstructed access to the instrument’s front panel; this ensures space for the cell cable connection and allows the user to easily operate the power switch and see the LED lights. There should also be at least two inches (50 mm) of clearance around the sides (left, right, and back) and above (top) the instrument. Particular care should be given to selecting a clean and dry location. The vent fans on the back panel must not be blocked so that adequate ventilation is available for cooling the circuitry inside the instrument.
During normal use, the instrument is connected to an electrochemical cell via a cell cable plugged into the front panel of the instrument. Thus, it is important to ensure that the lab bench or table also has sufficient workspace for securely mounting the electrochemical cell and for routing the cell cable between the instrument and the electrochemical cell.
The WaveDriver 100 and/or the electrochemical cell can be placed inside a glovebox to perform specialized experiments. More information can be found here:
3.1.3Connecting the Power Supply to the Instrument
The power supply provides the DC power required by the instrument (24 VDC, 5.0 A) via a low voltage cable. One end of the low voltage cable is permanently connected to the power supply, and the other end is connected to the POWER INPUT port located on the back panel of the instrument (see Figure 5).
Figure 5. Power Supply with Low Voltage (24 VDC) Cable Connection to Back Panel
When connecting the low voltage power cable to the POWER INPUT port on the back panel, take note that the connector will only fit into the port using one particular orientation. The side of the cable connector which is completely flat must be oriented to the right when plugging the connector into the port.
When properly installed, the low voltage power cable will securely latch into the POWER INPUT port. When unplugging the low voltage power cable from the port, it is important to release this latch correctly. Grip the connector firmly near the flat part of the connector. Then, pull the connector straight out (do not twist the connector).
3.1.4Connecting the Power Supply to the AC Mains
The WaveDriver 100 power supply is connected to the AC Mains via an AC power cord.
The AC power cord must be rated to carry at least 10 Amps. One end of the AC power cord is connected to the standard C14 connector on the power supply, and the other end is connected to the AC Mains (wall outlet). Pine Research offers power cords suitable for use in a variety of different countries and regions (see Section 7
The local source of electrical power (i.e., the AC Mains) must be a branch circuit protected by a circuit breaker rated between 10 and 15 Amps. The AC voltage supplied by the AC Mains must be between 100 and 240 VAC, and the AC frequency must be between 50 and 60 Hz. The power supply and AC power cord must be positioned such that the user has unobstructed access to these items. The user must be able to disconnect the instrument from the power supply and disconnect the power supply from the AC mains (wall outlet) without any obstructions.
3.2AfterMath Software Installation
AfterMath is designed to be installed on a personal computer (PC) using a Windows-based operating system, and is not compatible with Apple products or operating systems at this time. AfterMath system requirements can be found here:
3.2.1Step-by-Step Software Installation Instructions
AfterMath installation media is included with the WaveDriver 100. The installation media contains the latest release of AfterMath available at the time of purchase, the device drivers for communicating with the instrument, and the permissions files that implement the software license. Installation instructions for AfterMath software can be found here:
3.2.2Permissions File Verification
On the installation media, there are license files, or “permissions files”, which authorize a computer running AfterMath to control specific instruments. Information on permissions files can be found here:
3.3USB Cable Connection
The WaveDriver 100 connects to a computer using the USB cable supplied with the instrument (Type A male to Type B female USB cable). Information on the USB cable connection can be found here:
The next section of this guide will describe testing and calibrating a fully-installed WaveDriver 100. Before proceeding, ensure the following installation steps have been completed:
- The WaveDriver 100 instrument is located in a secure, dry location with adequate space
- Electrical power is connected to the WaveDriver 100
- AfterMath software is installed on the computer
- The WaveDriver 100 instrument is connected to a computer via the USB cable
This section describes how to test the WaveDriver 100 system and calibrate the cell cable for AC experiments (EIS). By connecting the potentiostat to a well-behaved network of resistors, capacitors, and/or inductors (using the EIS Calibration & Dummy Cell),
the potentiostat circuitry can be tested to assure that it is working properly.
Testing a WaveDriver 100 involves several steps. This section can be viewed in detail on the following post:
4.2Simple DC Test
The simple DC test for the WaveDriver 100 involves several steps. This section can be viewed in detail on the following post:
4.3Cell Cable Calibration
The electrical properties of the cell cable (resistance, capacitance, and inductance) can potentially interfere with electrochemical measurements. The effect of these cable properties on experimental data from DC electrochemical techniques is typically negligible; however, for AC techniques (such as EIS) the impact of the cell cable must be taken into account. Failure to properly calibrate and compensate for cell cable properties can lead to erroneous results, especially when making EIS measurements at high frequency.
Full details for this procedure can be viewed on the following post:
4.4Open Lead Test
An “open lead” test explores the absolute upper load measurement limit for EIS measurements across a range of frequencies. Measurements made at these extreme limits fall well outside the 5%, 5° region shown on the WaveDriver 100 Accuracy Contour Plot.
The open lead test is simply a quick diagnostic test, and the results of the test should never be interpreted as a measurement of instrument accuracy.
Full details for this procedure can be viewed on the following post:
4.5Shorted Lead Test
A “shorted lead” test explores the absolute lower load measurement limit for EIS measurements across a range of frequencies. Measurements made at these extreme limits fall well outside the 5%, 5° region shown on the Accuracy Contour Plot.
The shorted lead test is a quick diagnostic test, and the results of the test should never be interpreted as a measurement of instrument accuracy.
Full details for this procedure can be viewed on the following post:
4.6Simple EIS Test
This test simulates the EIS response of a real electrochemical system involving inductive, resistive, and capacitive elements. A representative circuit containing these elements is built into the EIS Calibration & Dummy Cell
and may be used to test the EIS functionality of the WaveDriver 100 as well as the circuit fitting tools available in the AfterMath software package.
Full details for this procedure can be viewed on the following post:
5Cell Cable Connections
This section describes how to connect several different kinds of electrochemical cells to the WaveDriver 100. Before proceeding, the user should be familiar with general concepts associated with electrochemical cells and experimentation. Using the WaveDriver 100 Cell Cable (part number ACP5E01),
connections can be made to simple two-terminal cells (such as batteries, fuel cells, solar cells, amperometry sensors, capacitors, resistors, and inductors), compact voltammetry cells, and traditional three-electrode voltammetry cells (including those which contain a rotating disk electrode or a rotating cylinder electrode).
5.1Cell Cable Color Code
The front panel of the WaveDriver 100 has a large cell connection port containing several signal lines that may be connected to the various working, counter, and reference electrodes that may be present in an electrochemical cell. It is important to understand that some of the signal lines are low impedance DRIVE lines while others are high impedance SENSE lines. In general, the DRIVE lines are used to drive current through the electrochemical cell while the SENSE lines are used to carefully measure the potential at various electrodes.
More details on the WaveDriver 100 cell cable, including color code descriptions and cable pinout, can be found on the following post:
With the proper cell cable configuration, several kinds of electrochemical systems can be connected to the WaveDriver 100. The following discussion of cell cable configurations assumes prior familiarity with the concepts associated with each type of electrochemical cell.
The WaveDriver 100 Cell Cable has a D-Shell connector that fits the cell cable port located on the front panel of the instrument. There are two thumbscrews on the D-Shell connector that tighten into the cell cable port to provide a secure connection (see Figure 6).
Figure 6. Secure Connection of the WaveDriver 100 Cell Cable to the Cell Port
As the cell cable emerges from the D-Shell connector, a conductive mesh shield runs along most of the length of the cable. This mesh shield is electrically-connected to the chassis of the instrument and provides additional protection from environmental noise and ESD events.
At the cell end of the cable, multiple signal lines emerge from the mesh sleeve and terminate in banana plugs. All of these signal lines (except for the GRAY chassis line) are coaxial. The outer (shield) portion of each coaxial line further protects sensitive signals from environmental noise. Alligator clips (included) may optionally be installed on the banana plugs as needed.
Typical examples of two-electrode setups are solid-state experiments that probe electrochemical behavior across a single interface, experiments that involve ion-selective electrodes (where the open circuit potential is measured between an ion-selective electrode and a reference electrode), and rechargeable batteries consisting of an anode and cathode. Simple experiments with common electronic components (resistors, capacitors, and inductors) also use a two-electrode arrangement.
More details on two-electrode setups can be found on the following post:
In a traditional three-electrode cell, three different electrodes (working, counter, and reference) are placed in the same electrolyte solution. During three-electrode experiments, charge flow (current) primarily occurs between the working electrode and the counter electrode while the potential of the working electrode is measured with respect to the reference electrode. The WaveDriver 100 Cell Cable can be configured for three-electrode experiments by appropriate connection of the drive and sense lines.
More details on three-electrode setups can be found on the following post:
5.2.3Rotating Disk and Rotating Cylinder Electrodes (RDE and RCE)
The WaveDriver 100 may be used in conjunction with an electrode rotator to perform Rotating Disk Electrode (RDE) or Rotating Cylinder Electrode (RCE) experiments. These experiments are hydrodynamic variations of traditional three-electrode voltammetry.
Rotating the working electrode (which may have a disk or cylinder geometry) at a controlled rate establishes convective mass transfer of electrolyte solution (and dissolved electroactive species) towards the electrode surface. Connecting the potentiostat to a hydrodynamic experiment involves not only making connections to the electrodes (working, counter, and reference) but also providing a rotation rate control signal to the electrode rotator.
More details on RDE and RCE setups can be found on the following post:
5.2.4Rotation Rate Control
Many electrode rotators can accept rotation rate control signals from a potentiostat. The WaveDriver 100 instrument provides both a digital “on/off” signal and an analog rotation rate signal that can be used to control the motor on an electrode rotator. These signals output from a connector on the back panel of the WaveDriver 100 (see Table 10). Special cables are available from Pine Research that may be used to connect these signals to various electrode rotator models.
More details regarding automated control of Pine Research rotators can be found here,
while directions on altering the input rotation rate for the MSR rotator can be found here:
Connecting a Pine Research WaveDriver 100 to a Pine Research MSR rotator
requires a special cable (part number AKCABLE4).
One end of this cable has a small green connector which fits into Control Port “B” on the back panel of the WaveDriver 100. The other end of the cable connects to the MSR control unit at two locations (see Figure 7). The coaxial portion of the cable connects to the pair of INPUT jacks on the front panel of the control unit. The other part of the cable terminates at a banana plug which is connected to the MOTOR STOP jack on the back panel of the control unit.
Figure 7. Rotation Rate Control Connections for a Pine Research MSR Rotator
Connecting a Pine Research WaveDriver 100 to a Pine Research WaveVortex 10 rotator
requires a special cable (part number AKCABLE7-03).
One end of this cable has a small green connector which fits into Control Port “B” on the back panel of the WaveDriver 100. The other end of the cable terminates at a large green connector which fits into the control port on the side of the WaveVortex 10 control unit (see Figure 8).
Figure 8. Rotation Rate Control Connections for a Pine Research WaveVortex 10 Rotator
5.2.5Compact Voltammetry Cell Cable Connections
More details on connecting a WaveDriver 100 to the Pine Research compact voltammetry cell will be available at a later date.
The general goal of an experiment grounding strategy is to reduce the level of signal noise in the electrochemical measurement caused by noise sources in the laboratory environment. To avoid issues with laboratory noise sources, it is important to properly ground all metal objects near an electrochemical setup and to make appropriate grounding connections between the potentiostat and any other electronic equipment used as part of the experiment.
Detailed information on general instrument grounding, including common noise sources (Section 6.1
), grounding terminology (Section 6.2
), Faraday cages (Section 6.3
), metal apparatus (Section 6.4
), and USB isolation (Section 6.5
) can be found here:
6.1Common Noise Sources
Information on common noise sources can be found in the post detailing general instrument grounding:
A potentiostat or other piece of electronic equipment generally has three types of grounding connections that are often confused with one another: the earth ground
, the chassis terminal
, and the DC Common
. These are discussed in more detail in the post detailing general instrument grounding:
Information on Faraday cages can be found in the post detailing general instrument grounding:
Information on metal apparatus can be found in the post detailing general instrument grounding:
Information on USB isolation can be found in the post detailing general instrument grounding:
The first step in determining the optimal grounding configuration for any electrochemical experiment is to understand the grounding configuration of the potentiostat itself. There are several possible ways in which the instrument chassis, the DC Common, and the earth ground might be connected. A summary of the most common configurations is provided (see Figure 9).
(as shipped from factory)
||Fully Earth Grounded
Figure 9. Four Common Instrument Grounding Configurations
When the WaveDriver 100 is shipped from the factory, there is no connection made between the DC Common and chassis terminal banana jacks on the back panel. This “Fully Floating” configuration may be suitable for some electrochemical experiments; however, in other situations it may be better to connect the DC Common and instrument chassis to obtain a “DC Common-to-Chassis” condition.
The “Fully Floating” arrangement is often required when one of the electrodes is actually part of a third-party apparatus (such as a quartz crystal microbalance or an electroplating system), and the third-party apparatus requires that the electrode be connected to the chassis or to the earth ground or to both. In these cases, the DC Common should be allowed to float with respect to the chassis to prevent an inadvertent short-circuit between the electrode and DC Common (via the third-party apparatus).
The WaveDriver 100 is designed so that no part of the instrument circuit is connected to earth ground by default. While the external power supply does have an earth ground connection, the earth ground is not passed through the power supply to the instrument. If desired, a deliberate connection between earth ground and the instrument chassis may be made. Various cables and connectors (not included) can be used to make a connection from the chassis terminal on the back panel of the instrument to the third-prong on a nearby electrical receptacle.
If the chassis is connected to the earth ground, the instrument may have a simple “Chassis–to–Earth Ground” connection (see Figure 9C), or it may be “fully earth grounded” (see Figure 9D). In many cases, connections to earth ground can introduce unknown or unwanted sources of noise in the experimental results. If the experimental setup requires that the instrument be earth grounded, then some trial-and-error may be required to determine whether or not to also connect the DC Common to earth ground.
6.7Grounding Third-Party Instrumentation
When using one or more third-party electronic instruments together with the WaveDriver 100, a common grounding strategy is to connect the chassis of the WaveDriver 100 to the chassis of the other instrument(s). All such connections should be brought together to a single point. Any other metal objects located near the electrochemical cell (e.g., ring stands, Faraday cage, clamps, etc.) should be connected to the same single point to avoid creating a possible grounding loop (see Figure 10).
When using third-party instrumentation, a decision must be made regarding whether or not to connect the chassis terminal to the earth ground. Some third-party equipment may actually force such a connection to earth ground, and sometimes this connection is hidden from view inside the third-party instrument. Trial-and-error, as well as the use of an ohmmeter, may be required to analyze and fully understand the grounding configuration when multiple instruments are used together.
Just like the WaveDriver 100, third-party instruments also have their own DC Common line which represents the common “zero volt” analog signal level within the third-party instrument’s circuit. When the WaveDriver 100 is connected to an electrode rotator control unit, a spectrometer, a quartz crystal microbalance, or other third-party instrument, a connection is almost always made between the DC Common lines of the various instruments. In these cases, it is important to be aware of whether or not the DC Common of a third-party instrument happens to also be connected to earth ground or to the instrument chassis. Such connections are sometimes hidden within the third-party instrument. Again, some trial-and-error, as well as the use of an ohmmeter, may be required to confirm whether or not the DC Common is floating with respect to the chassis (or with respect to earth ground).
The standard C14 connector on the WaveDriver 100 power supply is compatible with a wide range of power cords available from Pine Research. Each of the available power cords is rated at 10 A (minimum), and each cord is designed for use in a specific country or region of the world. Representative images and Pine Research part numbers are provided here:
A cursory introduction to theory and concepts related to electrochemical impedance spectroscopy is available on the Pine Research Knowledgebase. For a more thorough and complete study, the reader is encouraged to consult academic textbooks and the scientific literature.
8.1Electrochemical Impedance Spectroscopy
Experimental electrochemistry can be as powerful as it is tricky. Even simple DC methods (e.g.
, voltammetry, open circuit potential, chronoamperometry, chronopotentiometry) are often plagued by inaccuracies and/or poor signal-to-noise ratios resulting from seemingly insignificant or overlooked sources. Variables that can affect electrochemical data include, but are not limited to: the state and quality of electrodes, electrolyte, experimental hardware, the physical laboratory layout, software experimental parameters, arrangement of cables, and grounding configuration (see Section 6
for details on grounding).
AC techniques, like electrochemical impedance spectroscopy (EIS), can be similarly affected by these variables and sources of error. The user must exercise particular care and caution when setting up and running EIS experiments as the impact of small sources of error often has a larger effect on data quality than for DC methods. Obtaining and interpreting meaningful EIS data, as with many other facets of electrochemistry, requires repeated practice and often some trial-and-error with respect to both the hardware and software.
8.1.1Basic Background Theory
Basic background theory for electrochemical impedance spectroscopy can be found here:
Mathematical theory for electrochemical impedance spectroscopy can be found here:
8.1.3EIS Data Plotting
Information on EIS data plotting conventions can be found here:
8.1.4Data Accuracy and Validity
Details on EIS data accuracy and validity can be found here:
Information on Kramers-Kronig transforms can be found here:
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American, C. S. C. o. C. S.  Safety in Academic Chemistry Laboratories, 7 ed. American Chemical Society: State College, PA, 2003.
Orazem, M. E.; Tribollet, B.  Electrochemical impedance spectroscopy, 2nd ed. John Wiley & Sons, Inc.: Hoboken, NJ, 2017.
Lasia, A.  Electrochemical Impedance Spectroscopy and its Applications Springer New York: New York, NY, 2014.
Jorcin, J.; Pébère, N.; Tribollet, B.  CPE analysis by local electrochemical impedance spectroscopy.  Electrochim. Acta, 2006, 51(8-9), 1473–1479.
Hirschorn, B.; Orazem, M. E.; Tribollet, B.; Vivier, V.; Frateur, I.; Musiani, M.  Determination of effective capacitance and film thickness from constant-phase-element parameters.  Electrochim. Acta, 2010, 55(21), 6218–6227.
Roy, S. K.; Orazem, M. E.; Tribollet, B.  Interpretation of Low-Frequency Inductive Loops in PEM Fuel Cells.  Journal of The Electrochemical Society, 2007, 154(12), B1378.
Orazem, M.; Durbha, M.; Deslouis, C.; Takenouti, H.; Tribollet, B.  Influence of surface phenomena on the impedance response of a rotating disk electrode.  Electrochim. Acta, 1999, 44(24), 4403–4412.
Orazem, M. E.; Agarwal, P.; Jansen, A. N.; Wojcik, P. T.; Garcia-Rubio, L. H.  Development of physico-chemical models for electrochemical impedance spectroscopy.  Electrochim. Acta, 1993, 38(14), 1903–1911.
Remita, E.; Boughrara, D.; Tribollet, B.; Vivier, V.; Sutter, E.; Ropital, F.; Kittel, J.  Diffusion Impedance in a Thin-Layer Cell: Experimental and Theoretical Study on a Large-Disk Electrode.  The Journal of Physical Chemistry C, 2008, 112(12), 4626–4634.
Huang, V. M.; Wu, S.; Orazem, M. E.; Pébère, N.; Tribollet, B.; Vivier, V.  Local electrochemical impedance spectroscopy: A review and some recent developments.  Electrochim. Acta, 2011, 56(23), 8048–8057.
Macdonald, D. D.  Review of mechanistic analysis by electrochemical impedance spectroscopy.  Electrochim. Acta, 1990, 35(10), 1509–1525.
Macdonald, D. D.  Reflections on the history of electrochemical impedance spectroscopy.  Electrochim. Acta, 2006, 51(8-9), 1376–1388.
Macdonald, D. D.  Some Advantages and Pitfalls of Electrochemical Impedance Spectroscopy.  CORROSION, 1990, 46(3), 229–242.
Barsoukov, E.; Macdonald, J. R.  Impedance spectroscopy: theory, experiment, and applications, 2nd ed. Wiley.
Bertoluzzi, L.; Bisquert, J.  Equivalent Circuit of Electrons and Holes in Thin Semiconductor Films for Photoelectrochemical Water Splitting Applications.  The Journal of Physical Chemistry Letters, 2012, 3(17), 2517–2522.
Bisquert, J.  Influence of the boundaries in the impedance of porous film electrodes.  PCCP, 2000, 2(18), 4185–4192.
Bisquert, J.  Theory of the Impedance of Electron Diffusion and Recombination in a Thin Layer.  The Journal of Physical Chemistry B, 2002, 106(2), 325–333.
Yuan, X.; Song, C.; Wang, H.; Zhang, J.  Electrochemical Impedance Spectroscopy in PEM Fuel Cells Springer London: London, 2010.
Agarwal, P.; Orazem, M. E.; Garcia‐Rubio, L. H.  Measurement Models for Electrochemical Impedance Spectroscopy.  Journal of The Electrochemical Society, 1992, 139(7), 1917.
Agarwal, P.; Orazem, M. E.; Garcia‐Rubio, L. H.  Application of Measurement Models to Impedance Spectroscopy.  Journal of The Electrochemical Society, 1995, 142(12), 4159.
Macdonald, D. D.; Urquidi‐Macdonald, M.  Application of Kramers-Kronig Transforms in the Analysis of Electrochemical Systems.  Journal of The Electrochemical Society, 1985, 132(10), 2316.
Urquidi-Macdonald, M.; Real, S.; Macdonald, D. D.  Application of Kramers-Kronig Transforms in the Analysis of Electrochemical Impedance Data.  Journal of The Electrochemical Society, 1986, 133(10), 2018.
Boukamp, B.; Macdonald, J. R.  Alternatives to Kronig-Kramers transformation and testing, and estimation of distributions.  Solid State Ionics, 1994, 74(1-2), 85–101.
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A glossary of selected electrochemistry terms can be found here:
After reviewing the content of this user guide, please contact Pine Research should you have any issues or questions with regard to the use of the instrument, accessories, or software.
Contact us anytime by the methods provided below:
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. This is the general sales email and our team will ensure your email is routed to the most appropriate technical support staff available. Our goal is to respond to emails within 24 hours of receipt.
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