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Potentiostat/Galvanostat

Single-channel potentiostat

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CS single-channel potentiostat/galvanostat

The instrument is capable of a wide variety of electrochemical techniques, and is available with integrated simulation and fitting software functions for both impedance and cyclic voltammetry. These features provide powerful tools for electrochemical mechanistic studies.
  • Overview
  • Specifications
  • Software Techniques
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CS electrochemical workstation (potentiostat / galvanostat) contains a fast digital function generator, high-speed data acquisition circuitry, a potentiostat and a galvanostat. With high performance in stability and accuracy with advanced hardware and well-functioned software, it is a comprehensive research platform for corrosion, batteries, electrochemical analysis, sensor, life science and environmental chemistry etc.
 
Application                      
- 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.

 


Software Features
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.

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.

 

CS Studio software can achieve real time saving of the measuring data.The data can be automatically saved even in case of sudden power off.

CS studio kit has a built-in versatile timing policy for combined measurements, which can facilitate the automation of experiments and save time.


 


Battery analysis: charge & discharge efficiency, capacity, specific capacitance, charge & discharge energy etc.


EIS analysis: Bode, Nyquist, Mott-Schottky plot

 

 
 

Technical advantages
Impedance (EIS)
CS potentiostat applies correlation integral algorithm and dual-channel over-sampling technique, and has strong anti-interference ability. It is suitable for EIS measurements of high-impedance system. It can also be used to obtain Mott-Schottky curve and differential capacitance curve.


EIS of AA6063 Al alloy in Ce3+ containing 3% NaCl solution
 

Polarization curve

Polarization curve / Tafel plot can be obtained. The user can set the anodic reversal current (passivation film breakdown current) of the cyclic polarization curve to determine material’s pitting potential and protection potential and evaluate the its susceptibility to intergranular corrosion. The software employs non-linear fitting to analyze polarization curve, and can make fast evaluation of material’s anti-corrosion ability and inhibitors.


 
 
Polarization curve of Ti-based amorphous alloy & stainless steel in 3%NaCl solution  

Voltammetry
It can do the following experiments: Linear Sweep Voltammetry(LSV), Cyclic Voltammetry(CV), Staircase Cyclic Voltammetry(SCV), Square wave voltammetry(SWV), Differential Pulse Voltammetry(DPV), Normal Pulse Voltammetry(NPV), AC voltammetry(ACV), Stripping voltammetry etc. It integrates calculation of peak area, peak current and standard curve analysis.

CV of  PPy supercapacitor in 0.5 mol/L H2SO4

LSV: mesoporous carbon material in 0.1M KOH

  
Electrochemical Noise
With high-resistance follower and zero-resistance ammeter, it measures the natural potential/current fluctuations in corrosion system. It can be used to study pitting corrosion, galvanic corrosion, crevice corrosion, and stress corrosion cracking etc. Through noise spectrum, we can evaluate the inducement, growth and death of metastable pitting and crack. Based on calculation of noise resistance and pitting index, it can complete localized corrosion monitoring.

Electrochemical noise of low-carbon steel in 0.05mol/L Cl-+0.1mol/L NaHCO3


Full floating measurement
CS workstation uses full-floating working electrode. It can be used for autoclave electrochemical measurements, on-line corrosion monitoring of metallic components under the ground (rebar in concrete, etc.)




Standard supply list for single channel potentiostat

Instrument host*1
CS studio software(Testing & data analysis)*1
Power cable*1
USB cable *1
Electrode cable *2
Dummy cell*1
**If you need electrodes and cells, please kindly contact us for purchase.

 
Service


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



Specifications
Support 2-, 3- or 4-electrode system
Potential control range±10V
Current control range±2A
Potential control accuracy0.1%×full range±1mV
Current control accuracy0.1%×full range
Potential resolution10μV (>100Hz),3μV (<10Hz)
Current sensitivity1pA
potential rise time<1μS (<10mA), <10μS (<2A)
Reference electrode input impedance:1012Ω||20pF
Current range2nA~2A, 10 ranges
Compliance voltage±21V
Maximum current output2.0A
CV and LSV scan rate: 0.001mV~10,000V/s
CA and CC pulse width0.0001~65,000s
Current increment during scan1mA@1A/ms
Potential increment during scan0.076mV@1V/ms
SWV frequency0.001~100 kHz
DPV and NPV pulse width0.0001~1000s
AD data acquisition16bit@1 MHz,20bit@1 kHz
DA Resolution16bit, setup time1μs
Minimum potential increment in CV0.075mV
IMP frequency10μHz~1MHz
Low-pass filtersCovering 8-decade
Electrometer Bandwidth:1.4 MHz
Potential and current rangeAutomatic
Electrochemical impedance
Signal generator:
Frequency range:10μHz~1MHz
AC amplitude:1mV~2500mV
DC Bias-10~+10V
Output impedance50Ω
Waveformsine wave, triangular wave and square wave
Wave distortion<1%
Scanning modeLogarithmic/linear, increase/decrease
Signal analyzer:
Integral timeminimum:10ms or the longest time of a cycle
Maximum106 cycles or 105s
Measurement delay0~105s
DC offset compensation:
Potential automatic compensation range:-10V~+10V
Current compensation range:-1A~+1A
      Bandwith: 8-decade frequency range, automatic and manual setting
     
      PC and O/S requirement

Communications Interface:isolated Universal Serial Bus(USB 2.0)
Operating System: Windows 2000/NT/XP/ Win7/8/10
Weight / Measurements 6kg / 36x30x16Cm

 

 

Techniques CS150 CS300 CS310 CS350
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 EIS vs Frequency (IMP)    
EIS vs Time (IMPT)    
EIS vs Potential (IMPE)(Mott-Schottky)    
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)

 


 

Some of the Features of the CS studio software
 
1.   Timing measurement

 

CS studio software can achieve timing measurements. After you set the experiment and time, click start, then the experiment will be run automatically when it is the time.

  
2.  Combination test

  

Clicking the combination test, you can choose several techniques, and set the wait time, the start time, and the cycles.
Choose the techniques you want to run, and click Add, parameter setting window will appear.

  

 

  There are 4 instructions: start the cycle, start time, wait, and end the cycle. If you add instruction “start the cycle” , after some techniques and instructions, there must be a “end the cycle”.
In the left picture, start the cycle, we entered 10, so it shows “cycles 10”. The process from CV to LSV will be repeated for 10 times/cycles.
Start time– You should set a specific time when Potentiodynamic will start.
Wait – the delay time, it’s a period. We set 10s. In the picture, it indicates that after 10s, the LSV will start to run.
For every technique you choose, every instruction you make, you should click Add.
 
3.  Real time Data Saving
The data is saved real-time. Even in case of electricity cut off, the measured data will be saved till the last moment.
 
4.   Cycle(s) chosen to show
In CV technique and constant current charge and discharge, after measurement, during the data analysis, there is function of selecting the exact cycle(s) to show. You can see a cycle or some cycles among all cycles of the measurement. You can also export data or vector graph of an exact cycle or several cycles.
  
 

 
 Cycles from 4th ~6th
 
 

 The 5th cycle only
 
 

 
5.   Auto Find cathode peak and anode peak
In CV fitting, our software can automatically find the cathode peak and anode peak. The capacitance of the system can be calculated by integration.

  

6.  Tafel fitting
Our CS studio software can do tafel fitting towards the polarization curve. The corrosion current icorr of the metal materials can be obtained. Further, based on the value of electrochemical equivalent and density of the materials, the corrosion rate (mm/a) can be calculated. 

 

 
7.   Background subtraction

 

 
During data analysis, “background subtraction” function can be used to reduce the background noise’s influence on the test.
 
8.  Equivalent circuit
During EIS data analysis, there is built-in fitting function to draw the custom equivalent circuit. Firstly, draw the equivalent circuit, use the “Quick Fit” to obtain the parameters value, and then substitute the value into the equivalent circuit.

 


9. Our multichannel potentiostat can do simultaneous measurements in each channel, and it can also conduct the hydrogen diffusion test and RRDE test by combining two of the channels.

Please note that single channel potentiostat like CS350 cannot conduct the hydrogen diffusion test and RRDE. Only CS2350 bi potentiostat and above can. 

 
 10.   OCP check in instrument setting 
In instrument setup, by “OCP check” setting, the software can automatically determine change rate of the OCP value. When the change rate is below what’s set here, the software will start measurement automatically. This function is useful for metal corrosion measurement.
We can also set the polarity of the current and potential signal. The default is that oxidation current/potential is positive.  

  

 
 11.   Data open by txt and Origin 
The “.cor”(all data files except EIS are in “.cor” format) and “.z60”(EIS data) data files can be open in txt(in notebook). They can also be open in Origin through “import single ASCII”.
  
 

 
 
 
12.   3D Display
 


 


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