Model CS350M single-channel potentiostat/galvanostat with EIS consists of a DDS arbitrary function generator, a potentiostat/galvanostat and an FRA. With the help of built-in dual 24-bit Delta-sigma AD converters, it achieves excellent stability and high potential (1mV) and current(1pA) resolutions. CS350M has been widely applied in corrosion, energy, material and analysis electrochemistry. In addition, via current booster. CS350M can increase its output current up to 20A/40A/100A.
Application
-Energy materials (Li-ion battery, solar cell, fuel cell, supercapacitors, etc);
-Reactive mechanisms of electrosynthesis, electrodeposition (electroplating), anodic oxidation, electrolysis;
-Metallic corrosion; corrosion inhibitor, coating and cathodic protection efficiency;
-Electrocatalysis (HER, OER, ORR, CO2RR, NRR).
| Specifications |
| Support 2-, 3- or 4-electrode system |
Potential and current range: Automatic |
| Potential control range: ±10V |
Current control range: ±2A |
| Potential control accuracy: 0.1%×full range±1mV |
Current control accuracy: 0.1%×full range |
| Potential resolution: 10μV (>100Hz),3μV (<10Hz) |
Current sensitivity:1pA |
| Rise time: <1μS (<10mA), <10μS (<2A) |
Reference electrode input impedance:1012Ω||20pF |
| Current range: 2nA~2A, 10 ranges |
Compliance voltage: ±21V |
| Maximum current output: 2A |
CV and LSV scan rate: 0.001mV~10,000V/s |
| CA and CC pulse width: 0.0001~65,000s |
Current increment during scan: 1mA@1A/ms |
| Potential increment during scan: 0.076mV@1V/ms |
SWV frequency: 0.001~100 kHz |
| DPV and NPV pulse width: 0.0001~1000s |
AD data acquisition:16bit@1 MHz,20bit@1 kHz |
| DA Resolution:16bit, setup time:1μs |
Minimum potential increment in CV: 0.075mV |
| IMP frequency: 10μHz~1MHz |
Low-pass filters: covering 8-decade |
| Operating System: Windows 10/11 |
Interface: USB 2.0 |
| Weight / Measurements: 6.5kg, 36.5 x 30.5 x16 cm |
| EIS (Electrochemical Impedance Spectroscopy) |
| Signal generator |
| Frequency range:10μHz~1MHz |
AC amplitude:1mV~2500mV |
| DC Bias: -10~+10V |
Output impedance: 50Ω |
| Waveform: sine wave, triangular wave and square wave |
Wave distortion: <1% |
| Scanning mode: logarithmic/linear, increase/decrease |
| Signal analyzer |
| Integral time:minimum:10ms or the longest time of a cycle |
Maximum:106 cycles or 105s |
| Measurement delay: 0~105s |
| DC offset compensation |
| Potential automatic compensation range:-10V~+10V |
Current compensation range:-1A~+1A |
| Bandwidth: 8-decade frequency range, automatic and manual setting |
Model CS350M is the most comprehensive model, includes all electrochemical methods incl. EIS
You can find the comparison of the single-channel models from the following table.
| Techniques |
CS300M
(No EIS) |
CS310M
(with EIS) |
CS350M
(with EIS) |
Stable
polarization |
Open Circuit Potential (OCP) |
√ |
√ |
√ |
| Potentiostatic (I-T curve) |
√ |
√ |
√ |
| Galvanostatic |
√ |
√ |
√ |
| Potentiodynamic(Tafel plot) |
√ |
√ |
√ |
| Galvanodynamic |
√ |
√ |
√ |
| Transient polarization |
Multi-Potential Steps |
√ |
√ |
√ |
| Multi-Current Steps |
√ |
√ |
√ |
| Potential Stair-Step (VSTEP) |
√ |
√ |
√ |
| Galvanic Stair-Step (ISTEP) |
√ |
√ |
√ |
Chrono
methods |
Chronopotentiometry (CP) |
√ |
√ |
√ |
| Chronoamperometry (CA) |
√ |
√ |
√ |
| Chronocoulometry (CC) |
√ |
√ |
√ |
| Voltammetry |
Cyclic Voltammetry (CV) |
√ |
√ |
√ |
| Linear Sweep Voltammetry (LSV)(I-V) |
√ |
√ |
√ |
| Staircase Voltammetry (SCV) # |
√ |
|
√ |
| Square wave voltammetry (SWV) # |
√ |
|
√ |
| Differential Pulse Voltammetry (DPV)# |
√ |
|
√ |
| Normal Pulse Voltammetry (NPV)# |
√ |
|
√ |
| Differential Normal Pulse Voltammetry (DNPV)# |
√ |
|
√ |
| AC voltammetry (ACV) # |
√ |
|
√ |
| 2nd Harmonic A.C.Voltammetry (SHACV) |
√ |
|
√ |
| Amperometry |
Differential Pulse Amperometry (DPA) |
|
|
√ |
| Double Differential Pulse Amperometry (DDPA) |
|
|
√ |
| Triple Pulse Amperometry (TPA) |
|
|
√ |
| Integrated Pulse Amperometric Detection (IPAD) |
|
|
√ |
| EIS |
Potentiostatic EIS (Nyquist, Bode) |
|
√ |
√ |
| Galvanostatic EIS |
|
√ |
√ |
| Potentiostatic EIS (Optional freq.) |
|
√ |
√ |
| Galvanostatic EIS(Optional freq.) |
|
√ |
√ |
| Mott-Schottky |
|
√ |
√ |
| Potentiostatic EIS vs. Time (Single freq.) |
|
√ |
√ |
| Galvanostatic EIS vs. Time (Single freq.) |
|
√ |
√ |
Corrosion
test |
Cyclic polarization curve (CPP) |
√ |
√ |
√ |
| Linear polarization curve (LPR) |
√ |
√ |
√ |
| Electrochemical Potentiokinetic Reactivation (EPR) |
√ |
√ |
√ |
| Electrochemical Noise(EN) |
√ |
√ |
√ |
| Zero resistance Ammeter (ZRA) |
√ |
√ |
√ |
| Battery test |
Battery charge and discharge |
√ |
√ |
√ |
| Galvanostatic charge and discharge(GCD) |
√ |
√ |
√ |
| Potentiostatic Charging and Discharging(PCD) |
√ |
√ |
√ |
| Potentiostatic Intermittent Titration Technique(PITT) |
√ |
√ |
√ |
| Galvanostatic Intermittent Titration Technique(GITT) |
√ |
√ |
√ |
| Extensions |
Data Logger |
√ |
√ |
√ |
| Bulk electrolysis with Coulometry (BE) |
√ |
√ |
√ |
Applications
Corrosion Electrochemistry
CS potentiostats/galvanostats support a variety of electrochemical techniques for corrosion, such as OCP recorder, potentiodynamic, EIS, cyclic polarization (CPP), LPR, hydrogen diffusion test, zero resistance ammeter (ZRA), electrochemical noise (ECN), etc.
Due to their high input impedance(1013Ω), they are especially suitable for EIS measurement of high-impedance systems like coating, concrete, and pure water.
High-impedance coating ageing test in salt spray tests
Polarization curves of Ti-alloy& stainless steel in 3%NaCl solution
ECN of low-carbon steel in 0.05mol/L Cl+0.1mol/L NaHCO3
Energy & Battery Testing
With versatile functions like linear sweep voltammetry (LSV), cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), EIS (including potentiostatic and galvanostatic modes) with precise IR compensation, CS potentiostats are widely used in supercapacitor, Li-ion batteries, Li-S batteries, fuel cell, solar cell, solid-state batteries, flow batteries, and metal-air batteries, etc.
CV of PPy supercapacitor in 0.5 mol/L H2SO4 solution
Electrocatalysis
Based on CV and LSV techniques, CS potentiostats can carry out long-term tests for ORR, OER, HER, and CO2 reduction, which is crucial for evaluating catalyst stability. In addition, the CS2350M bi-potentiostat and multichannel potentiostat specialize in Faradaic efficiency synchronous measurement.
CS potentiostats can measure the half-wave potential (ORR) and overpotential (HER, OER) of catalysts and calculate the power density and energy density of Redox peaks.
LSV curves of various catalysts in alkaline solution
Analytical Electrochemistry
CS potentiostats include comprehensive voltammetric methods such as NPV, DPV, DNPV, SWV, and ACV, which make them ideal for quantitative analysis of trace elements via the intrinsic Voltammetry stripping techniques.
Stripping voltammetric curves in the solution dissolved with Pb2+, Cd2+, and Zn2+ ions
Electrochemical Sensor
Thanks to the high current sensitivity(100fA) and voltage resolution(1 mV), the CS potentiostat can be used for the R&D of biosensors and electrochemical sensors.
Technical Advantages
Switchable floating and earthing mode
All CS potentiostats/galvanostats can switch between the floating and earthing modes, and this strategy is beneficial for studying electrochemical systems in which the working electrodes are intrinsically ground, such as autoclaves, in-site concrete structures and multi-working electrodes requiring isolation, etc.
High-bandwidth EIS
With the help of built-in digital FRA and arbitrary signal generator, as well as the high input impedance (1013 W), the CS potentiostat is particularly suitable for EIS measurements of high-impedance systems (such as coating, membrane, concrete, etc.)
Based on the DC bias compensation technique, CS potentiostats can conduct EIS tests under different charge/discharge states of batteries, making them suitable for ultra-low resistance systems, such as power batteries, fuel cells, water-splitting equipment, etc.
Multiple electrode configurations
CS potentiostats support 2-, 3-, or 4-electrode configurations and can measure the galvanic current via built-in zero resistance ammeter circuits.
User-defined sequence test
CS Studio 6.0 for Windows software supports user-defined sequence tests ("combination test"), which can facilitate automatic testing according to user-defined experiment sequences.
Sequence Test: corrosion tests
Power booster
Through CS2020B/CS2040B/CS2100B booster, the CS potentiostats can extend their output current up to ±20A/40A/100A, meeting the growing requirements in fuel cells, power batteries, electroplating etc.
The compliance voltage of single-channel potentiostat can be customized(±30V),suitable for carbon/nitrogen electrochemical reduction.
CS potentiostats can work with a CST520 arrayed electrode mapper to study the non-uniform corrosion of metal samples under deposits, coatings and anti-rust oils.
Software development kit (SDK)
All CS potentiostats run under the control of CS Studio 6.0 for Windows (CSS 6.0). The CSS6.0 supports third-party languages, such as LabVIEW, C, C++, C#, VC, Python and others. Some API general interfaces and development examples can be supplied with the CS potentiostats. Through the SDK, customers can implement user-defined test methods.
Real-time data Storage
CSS 6.0 saves experimental data timely, even if the experiment is accidentally interrupted by a power failure or computer shutdown. CSS 6.0 supports several data formats compatible with Originpro and Microsoft Excel.
Versatile data analysis functions
CSS 6.0 provides robust functions, including various electrochemical measurements and data analysis. It can complete Tafel plot fitting, CV derivation, integration and peak height analysis, EIS equivalent circuit fitting, etc.
3, 4 parameter polarization curve fitting.
EIS fitting
Electrochemical noise spectrum analysis
Pseudo-capacitance calculation
GCD-specific capacitance, efficiency calculation
Mott-Schottky analysis
CV curve analysis
Activation/re-passivation curve analysis
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