Single channel potentiostat

CS350M EIS Potentiostat /Galvanostat

CS350M is the most advanced single channel potentiostat with all electrochemical techniques incl. EIS.

- Built-in EIS/FRA,EIS Frequency range: 10μHz~1MHz
- High-power Potentiostat/Galvanostat/ZRA;
- Potential control range: ±10V; Compliance voltage: ±21V
- Current control range: ±2A
- Potential resolution: 10μV; current resolution 1pA

Related Application
Contact Us
Corrtest Instruments
Jinfeng Building A, Intl Enterprise Center, Optics valley Ave.,East lake High-tech Dev. Zone, Wuhan city, 430074, China
Phone/WhatsApp: +86 13469965984
Product Introduction
Corrtest potentiostat /galvanostat / electrochemical workstation CS350M consists of DDS arbitrary function generator, high power potentiostat/galvanostat, dual-channel correlation analyzer, dual-channel high-speed 16bit/high-precision 24bit AD converter and extension interfaces. It has more than 40 electrochemical methods including built-in EIS (frequency range 10μHz~1MHz). Max. current is ±2A, potential range is ±10V. It can be used for various electrochemical fields such as corrosion, energy, material and electroanalysis. The current can be boosted up to 20A with a current booster, and compliance voltage can be expanded up to 30V, which can meet the needs of power batteries, electrolysis and electrodeposition field.

 Reaction mechanism of Electrosynthesis, electrodeposition, anodic oxidation, etc.
 Electrochemical analysis and sensor;  
● New energy materials (Li-ion battery, solar cell, fuel cell, supercapacitors), advanced functional materials, photoelectronic materials;
● Corrosion study of metals in water, concrete and soil, etc;
 Fast evaluation of corrosion inhibitor, water stabilizer, coating and cathodic protection efficiency.

Standard supply list for each set
Instrument host CS350M  x1
CS studio software x1
Power cable x1
USB cable x1
Cell cable x2
Dummy cell(1kΩ||100µF) x1
Manual x1

Service: (**all the service is free)
1. Warranty period: 5 years
2. Provide installation guidance and manual, software installation video.
3. Lifetime free software upgrading and technical service
4. Provide repair service for free

Corrtest potentiostat includes all the electrochemical techniques for corrosion measurement such as OCP, polarization curve (potentiodynamic), EIS, Cyclic polarization CPP (passivation curve), Electrochemical Potentiokinetic Reactivation (EPR), Hydrogen diffusion test, ZRA, Electrochemical noise, etc. It can be used to study metal corrosion mechanism and corrosion resistance, and evaluate the coating durability and sacrificial anode current efficiency. It can also be used for rapid screening of corrosion inhibitors, fungicides, etc.
Polarization curve of Ti-based amorphous alloy & stainless steel in 3%NaCl solution

EN of low-carbon steel in 0.05mol/LCl+0.1mol/LNaHCO3

It uses correlation integral algorithm and dual-channel over-sampling technique, and has strong anti-interference ability. The internal resistance of the instrument is up to 1013Ω. It's suitable for EIS measurements of high-impedance system (such as coating, concrete etc.)

Salt spray aging test of high impedance coating
With techniques LSV, CV, galvanostatic charge and discharge (GCD), Constant potential/ current EIS, and precise IR compensation circuit, Corrtest potentiostats are widely used in supercapacitor, Li-ion batteries, sodium-ion batteries, fuel cell, Li-S batteries, solar cell, solid-state batteries, flow batteries, metal-air batteries etc. It is an excellent scientific tool for researchers in the fields of energy and materials.

CV curve of PPy supercapacitor in 0.5 mol/L H2SO4 solution
CS350M potentiostat includes all the voltammetric methods such as NPV, DNPV, SWV, ACV, and can be used for fast analysis of the trace elements in the solution. Voltammetry stripping methods can do the Quantitative analysis according to the stripping peak current.
Stripping voltametric curves in solution of different Pb2+, Cd 2+,Zn2+ concentration

Corrtest potentiostat can measure the half-wave potential (ORR), overpotential (HER, OER) of the catalyst, and has the function of peak power density and energy density calculation.
Long-term cyclic measurement for ORR, OER, HER,CO2RR by techniques such as cyclic voltammetry, potentiostatic, galvanostatic. Faraday efficiency can be measured with a bipotentiostat.
LSV curve of catalysts in alkaline solution

Maximum current can be 20A and compliance voltage can be 30V, and with IR compensation technique, Corrtest potentiostat can precisely measure the overpotential of the electrode, which is a big advantage in electrocatalysis field.


Full floating
All Corrtest potentiostats / galvanostats are designed as full-floating, and can be used for electrochemical study of working electrode connecting to earth, such as autoclave, metal part in bridge, concrete
Corrtest potentiostat uses correlation integral algorithm and dual- channel over-sampling technique, and has strong anti-interference ability. The internal resistance of the instrument is up to 1013Ω. It's suitable for EIS measurements of high-impedance system (such as coating, concrete etc.)
With constant current carrier and DC bias technology, Corrtest potentiostat can be used for battery impedance measurement under charge and discharge state, suitable for ultra-low resistance system (such as 18650 battery, soft pack battery, battery core...)
EIS Accuracy
Multi electrode system
Support 2-, 3-, 4-electrode system, can be used to test battery internal resistance or 4-electrode thin film impedance measurement
With Zero resistance ammeter for galvanic current measurement
Combination test
CS studio software supports the combination test for various experiments to achieve flexible and unattended test. You can set the parameters for each experiment in advance, and set the intervals, wait time etc between each experiment.
Combination Test: corrosion tests
Combination Test: Pseudocapacitor tests

High current option
● With the booster, the current can be boosted to20A, which meets the requirement in fuel cell, power battery, electroplating, etc
● Can customize the instrument to be 30V high compliance voltage, which meets the test requirement in low-conductivity solutions (organic system, concrete system etc), especially suitable for carbon and nitrogen reduction study.

Software development kit(SDK)
We can provide secondary development interfaces,API general interfaces and development examples, and can realize data call for Labview, C, C++, C#, VC and other program, which is convenient for secondary development and test methods customization.
Real-time data storage
Experiment data can be stored in real time. Even if the test is interrupted by a power failure, the data will be automatically saved. The data is compatible with Excel, Origin, and can be directly opened in third-party software for data processing and curve drawing.

Versatile data analysis
CS Studio is the software for Corrtest potentiostat for experiment control and data analysis. It can do: multi-parameter Tafel curve fitting, derivation, integration and peak height analysis of voltammetric curve, EIS equivalent circuit customization and impedance spectrum fitting, etc.
Multi-parameters Polarization curve
EIS fitting
Electrochemical noise analysis
Pseudocapacitance calculation
GCD specific capacitance, efficiency
Mott-Schottky plot analysis
CV analysis
Software Features

Cyclic voltammetry:
CS studio software provides users a versatile smoothing/differential/ integration kit, which can complete the calculation of peak height, peak area and peak potential of CV curves. In CV technique, during the data analysis, there is function of selecting exact cycle(s) to show. You can choose to see a cycle or some cycles as you want. You can also export data or vector graph of an exact cycle or several cycles.
Tafel plot and corrosion rate:
CS studio also provides powerful non-linear fitting on Butler-Volmer equation of polarization curve. It can calculate Tafel slope, corrosion current density, limitation current, polarization resistance, corrosion rate. It can also calculate the power spectrum density, noise resistance and noise spectrum resistance based on the electrochemical noise measurements.
Battery Test and analysis: 
charge & discharge efficiency, capacity, specific capacitance, charge & discharge energy.

EIS analysis: Bode, Nyquist, Mott-Schottky plot
During EIS data analysis, there is built-in fitting function to draw the custom equivalent circuit.
Real time saving of data: The data can be automatically saved even in case of sudden power off.

Data open: You can open the data files by txt format in notepad. Data can also be opened in Origin
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: 0.1mV~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 
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
Techniques /Methods- Model CS350M
Stable polarization
Open Circuit Potential (OCP)Potentiostatic (I-T curve)GalvanostaticPotentiodynamic (Tafel plot)Galvanodynamic (DGP)
Transient Polarization
Multi Potential Steps, Multi Current Steps, Potential Stair-Step (VSTEP), Galvanic Stair-Step (ISTEP)
Chrono Method
Chronopotentiometry (CP), Chronoamperametry (CA), Chronocaulometry (CC)
Linear Sweep Voltammetry (LSV), Cylic Voltammetry (CV), 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 AC Voltammetry (SHACV), Fourier Transform AC Voltammetry (FTACV)
#There is corresponding voltammetry stripping methods 
Electrochemical Impedance Spectroscopy (EIS)
EIS vs Frequency (IMP), Galvanostatic EIS, EIS vs Potential (IMPE)(Mott-Schottky), EIS vs Time (IMPT), Galvanostatic EIS vs Time
Corrosion Measurements
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)
Differential Pulse Amperometry (DPA), Double Differential Pulse Amperometry (DDPA), Triple Pulse Amperometry (TPA), Integrated Pulse Amperometric Detection (IPAD)
Some of the Published papers Using Corrtest Electrochemical Workstation
Battery & Energy field
Li-ion battery
Fabrication and Shell Optimization of Synergistic TiO 2 -MoO 3 Core–Shell Nanowire Array Anode for High Energy and Power Density Lithium-Ion Batteries
Advanced functional materials  DOI: 10.1002/adfm.201500634

High-stable nonflammable electrolyte regulated by coordination-number rule for all-climate and safer lithium-ion batteries
Energy Storage Materials

Solvate ionic liquid boosting favorable interfaces kinetics to achieve the excellent performance of Li4Ti5O12 anodes in Li10GeP2S12 based solid-state batteries
Chemical Engineering Journal

High Pressure Rapid Synthesis of LiCrTiO4 with Oxygen Vacancy for High Rate Lithium-Ion Battery Anodes

Abundant cilantro derived high surface area activated carbon (AC) for superior adsorption performances of cationic/anionic dyes and supercapacitor application
Chemical Engineering Journal

Arrayed Heterostructures of MoS2 Nanosheets Anchored TiN Nanowires as Efficient Pseudocapacitive Anodes for Fiber-Shaped Ammonium-Ion Asymmetric Supercapacitors

Natural Biomass-Derived Hierarchical Porous Carbon Synthesized by an in Situ Hard Template Coupled with NaOH Activation for Ultrahigh Rate Supercapacitors
ACS Sustainable Chemistry &Engineering   DOI: 10.1021/acssuschemeng.8b02299

High-performance all-inorganic portable electrochromic Li-ion hybrid supercapacitors toward safe and smart energy storage
Energy Storage Materials

A Novel Phase-Transformation Activation Process toward Ni–Mn–O Nanoprism Arrays for 2.4 V Ultrahigh-Voltage Aqueous Supercapacitors
Advanced materials

Nitrogen-doped activated carbons derived from a co-polymer for high supercapacitor performance
Journal of Materials Chemistry A  DOI: 10.1039/c4ta01215a

Carbon-Stabilized High-Capacity Ferroferric Oxide Nanorod Array for Flexible Solid-State Alkaline Battery-Supercapacitor Hybrid Device with High Environmental Suitability
Advanced functional materials  DOI: 10.1002/adfm.201502265

Li-s battery
Facile Formation of a Solid Electrolyte Interface as a Smart Blocking Layer for High-Stability Sulfur Cathode
Advanced materials  DOI: 10.1002/adma.201700273

Sodium-ion battery
Encapsulating Sulfides into Tridymite/Carbon Reactors Enables Stable Sodium Ion Conversion/Alloying Anode with High Initial Coulombic Efficiency Over 89%
Advanced Functional materials

Recyclable molten-salt-assisted synthesis of N-doped porous carbon nanosheets from coal tar pitch for high performance sodium batteries
Chemical Engineering Journal

Solar cells
A flexible self-charged power panel for harvesting and storing solar and mechanical energy
Nano Energy

Enhancing the efficiency of CdS quantum dot-sensitized solar cells via electrolyte engineering
Nano Energy

Solution-Processed Laminated Perovskite Layers for High-Performance Solar Cells
Advanced functional materials

Fast and Controllable Electric-Field-Assisted Reactive Deposited Stable and Annealing-Free Perovskite toward Applicable High-Performance Solar Cells
Advanced functional materials  DOI: 10.1002/adfm.201606156

Zinc-ion battery Zinc-ion battery
Bifunctional Dynamic Adaptive Interphase Reconfiguration for Zinc Deposition Modulation and Side Reaction Suppression in Aqueous Zinc Ion Batteries

High-Performance Aqueous Zinc Batteries Based on Organic/Organic Cathodes Integrating Multiredox Centers
Advanced materials

A laser-scribed wearable strain sensing system powered by an integrated rechargeable thin-film zinc-air battery for a long-time continuous healthcare monitoring
Nano Energy

Engineering Polymer Glue towards 90% Zinc Utilization for 1000 Hours to Make High-Performance Zn-Ion Batteries
Advanced functional materials

Fuel Cell
Cost-effective Chlorella biomass production from dilute wastewater using a novel photosynthetic microbial fuel cell (PMFC)
Water Research

Simultaneous Cr(VI) reduction and bioelectricity generation in a dual chamber microbial fuel cell
Chemical Engineering Journal

A self-driven fuel cell to recycle (NH4)2SO4 fertilizer and energy from desulfurization solution
Separation and Purification Technology

Effect of in-situ transverse magnetic field on microstructure,mechanical properties and corrosion resistance of the directed energy deposited 316L stainless steel
Additive Manufacturing

Significance of waveform design to achieve bipolar electrochemical jet machining of passivating material via regulation of electrode reaction kinetics
International Journal of Machine Tools and Manufacture

Synthesis and characterization of highly hydrophilic self-associating terpolymers: Rheological, thermal, and corrosion protection studies
Chemical Engineering Journal

Corrosion and slurry erosion wear performances of coaxial direct laser deposited CoCrFeNiCu1-xMox high-entropy coatings by modulating the second-phase precipitation
Materials & Design

Characterizations of the biomineralization film caused by marine Pseudomonas stutzeri and its mechanistic effects on X80 pipeline steel corrosion
Journal of Materials Science & Technology

A novel Mg-Gd-Y-Zn-Cu-Ni alloy with excellent combination of strength and dissolution via peak-aging treatment
Journal of Magnesium and Alloys

Steel corrosion and corrosion-induced cracking in reinforced concrete with carbonated recycled aggregate
Cement and Concrete Composites

pH-triggered self-inhibition epoxy coating based on cerium-polyphenolic network wrapped carbon nanotube
Progress in Organic Coatings

Effect of post-sealing treatment with different concentrations of NaH2PO4 on corrosion resistance of MAO coating on 6063 aluminum alloy
Surface & Coatings Technology

Comparative study on corrosion behavior of Cu and Sn under UV light illumination in chloride-containing borate buffer solution
Corrosion Science

Monitoring corrosion fatigue crack formation on drill steel using electrochemical impedance spectroscopy: Experiment and modeling
Corrosion Science

New insight into the negative difference effect in aluminium corrosion usingin-situ electrochemical ICP-OES
Corrosion Science

Epoxy nanocomposite coatings with enhanced dual active/barrier behavior containing graphene-based carbon hollow spheres as corrosion inhibitor nanoreservoirs
Corrosion Science

Unmasking of the temperature window and mechanism for “loss of passivation” effect of a Cr-13 type martensite stainless steel
Corrosion Science
Carbon dioxide electroreduction to C2 products over copper-cuprous oxide derived from electrosynthesized copper complex
Nature communication

Transient and general synthesis of high density and ultrasmall nanoparticles on two-dimensional porous carbon via coordinated carbothermal shock
Nature communication

Enriching Reaction Intermediates in Multishell Structured Copper Catalysts for Boosted Propanol Electrosynthesis from Carbon Monoxide

Multi-microenvironment synergistically promoting CO2 electroreduction activity on porous Cu nanosheets
Applied Catalysis B: Environmental

Synergy of yolk-shelled structure and tunable oxygen defect over CdS/ CdCO3-CoS2: Wide band-gap semiconductors assist in efficient visible-light-driven H2 production and CO2 reduction
Chemical Engineering Journal

Modulating microenvironment of active moiety in Prussian blue analogues via surface coordination to enhance CO2 photoreduction
Separation and Purification Technology

Nitrogen-Doped Porous Molybdenum Carbide and Phosphide Hybrids on a Carbon Matrix as Highly Effective Electrocatalysts for the Hydrogen Evolution Reaction
Advanced energy materials

Selective Ethylene Glycol Oxidation to Formate on Nickel Selenide with Simultaneous Evolution of Hydrogen
Advanced Science

Self-assembled NiMn2O4 shell on nanoporous Ni(Mn) core for boosting alkaline hydrogen production
Applied Surface Science

WS2 moire superlattices derived from mechanical flexibility for hydrogen evolution reaction
Nature communication

A Bioinspired Iron-Centered Electrocatalyst for Selective Catalytic Reduction of Nitrate to Ammonia
ACS Sustainable ChemistryEngineering

Ex Situ Reconstruction-Shaped Ir/CoO/Perovskite Heterojunction for Boosted Water Oxidation Reaction
ACS Catalysis

High Configuration Entropy Activated Lattice Oxygen for O2 Formation on Perovskite Electrocatalyst
Advanced functional materials

Cobalt nanoparticles-encapsulated holey nitrogen-doped carbon nanotubes for stable and efficient oxygen reduction and evolution reactions in rechargeable Zn-air batteries
Applied Catalysis B: Environmental

Hollow Loofah-Like N, O-Co-Doped Carbon Tube for Electrocatalysis of Oxygen Reduction
Advanced functional materials

Synergistic Binary Fe–Co Nanocluster Supported on Defective Tungsten Oxide as Efficient Oxygen Reduction Electrocatalyst in Zinc-Air Battery
Advanced Science

Modulating microenvironment of active moiety in Prussian blue analogues via surface coordination to enhance CO2 photoreduction
Separation and Purification Technology

Accelerated photocatalytic degradation of diclofenac by a novel CQDs/ BiOCOOH hybrid material under visible-light irradiation: Dechloridation, detoxicity, and a new superoxide radical model study
Chemical Engineering Journal

Effect of rutile TiO2 on the photocatalytic performance of g-C3N4/brookite-TiO2-xNy photocatalyst for NO decomposition
Applied Surface Science

Single metal atom oxide anchored Fe3O4-ED-rGO for highly efficient photodecomposition of antibiotic residues under visible light illumination
Applied Catalysis B: Environmental

Rational Design of 3D Hierarchical Ternary SnO2/ TiO2/BiVO4 Arrays Photoanode toward Efficient
Photoelectrochemical Performance
Advanced science

Water splitting
Efficient decomposition of perfluorooctane sulfonate by electrochemical activation of peroxymonosulfate in aqueous solution: Efficacy, reaction mechanism, active sites, and application potential
Water Research

Direct Synthesis of Stable 1T-MoS2 Doped with Ni Single Atoms for Water Splitting in Alkaline Media

Multi-configuration structure based on catalysis electrodes and composite membrane for efficient alkaline water splitting
Chemical Engineering Journal

Rational Design of 3D Hierarchical Ternary SnO2/ TiO2/BiVO4 Arrays Photoanode toward Efficient
Photoelectrochemical Performance
Advanced science

Ultrathin Lutetium Oxide Film as an Epitaxial Hole-Blocking Layer for Crystalline Bismuth Vanadate Water Splitting Photoanodes
Advanced functional materials



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