China CS350 Electrochemical Instrument

CS350 electrochemical Instrument (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.

Applications:
(1) Reaction mechanism of Electrosynthesis, electrodeposition (electroplating), anodic oxidation, etc.

(2) Electrochemical analysis and sensor;

(3) New energy materials (Li-ion battery, solar cell, fuel cell, supercapacitors), advanced functional materials, photoelectronic materials;
(4) Corrosion study of metals in water, concrete and soil etc;
(5) Fast evaluation of corrosion inhibitor, water stabilizer, coating and cathodic protection efficiency.

HARDWARE FEATURES
Dual-channel high-speed 16bit/high-accuracy 24bit AD converter;
Built-in frequency response analyzer(FRA), frequency range: 10μHz~1MHz;
High-bandwidth high input impedance amplifier unit

Built-in FPGA DDS digital signals synthesizer

High-power Potentiostat/Galvanostat/ZRA;
Potential control range: ±10V; Compliance voltage: ±21V;
Current control range: ±2A ;
Potential resolution: 10μV; current resolution 1pA.
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
1. Impedance (EIS)
CS350 electrochemical instrument 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 (>109Ω, such as coating, concrete etc.). It can also be used to obtain Mott-Schottky curve and differential capacitance curve. During test, the software can display real-time open circuit potential(OCP) without entering.

EIS of AA6063 Al alloy in Ce3+ containing 3% NaCl solution(left)
Polarization curve of Ti-based amorphous alloy & stainless steel in 3%NaCl solution(right)

2. Polarization curve
CS350 electrochemical instrument can complete linear polarization curve and Tafel plot measurements. 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.
3. Voltammetry
It can do the following electroanalysis methods: 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.

LSV curve: mesoporous carbon material in 0.1M KOH

CV curves of PPy supercapacitor in 0.5 mol/L H2SO4

4. 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

5. Full floating measurement
CS350 electrochemical instrument 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.)
6. User-defined methods
CS350 electrochemical instrument supports user-defined combination measurements. The user can set cyclic timing measurements of an electrochemical method or several methods.
We are able to provide API functions and development examples, which facilitates some users' requirements for secondary development and self-defined measurements.

Specifications Support 2-, 3- or 4-electrode systemPotential control range: ±10VCurrent control range: ±2APotential control accuracy: 0.1%xfull range±1mVCurrent control accuracy: 0.1%xfull rangePotential resolution: 10μV (>100Hz),3μV (<10Hz)Current sensitivity:1pARise time: <1μS (<10mA), <10μS (<2A)Reference electrode input impedance:1012Ω||20pFCurrent range: 2nA~2A, 10 rangesCompliance voltage: ±21VMaximum current output: 2ACV and LSV scan rate : 0.001mV~10,000V/sCA and CC pulse width: 0.0001~65,000sCurrent increment during scan: 1mA@1A/msPotential increment during scan: 0.076mV@1V/msSWV frequency: 0.001~100 kHzDPV and NPV pulse width: 0.0001~1000sAD data acquisition:16bit@1 MHz,20bit@1 kHzDA Resolution:16bit, setup time:1μsMinimum potential increment in CV: 0.075mVIMP frequency: 10μHz~1MHzLow-pass filters: Covering 8-decadePotential and current range: AutomaticPC and O/S requirement Interface: USB 2.0Operating System: Windows 2000/NT/XP/ win7/win8/win10Weight / MeasurementsNet weight: 6.5kg Gross weight: 10kgInstrument size: 36.5 x 30.5 x16cm; After package: 52.5 x 37.5x 22.5cm

Electrochemical Impedance Spectroscopy(EIS)Signal generatorFrequency range:10μHz~1MHzAC amplitude:1mV~2500mVDC Bias:-10~+10VOutput impedance:50ΩWaveform: sine wave, triangular wave and square waveWave distortion:<1%Scanning mode: logarithmic/linear, increase/decreaseSignal analyzerIntegral time:minimum:10ms or the longest time of a cycleMaximum:106 cycles or 105sMeasurement delay:0~105sDC offset compensationPotential automatic compensation range:-10V~+10VCurrent compensation range:-1A~+1ABandwidth: 8-decade frequency range, automatic and manual setting

Software
Techniques included in CS350 electrochemical instrument
Stable polarization
Open Circuit Potential (OCP), Potentiostatic (I-T measurement), 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), Staircase Voltammetry (SCV), Differential Pulse Voltammetry (DPV), Normal Pulse Voltammetry (NPV), Square wave voltammetry (SWV), ACvoltammetry (ACV), Differential Normal Pulse Voltammetry (DNPV), 2nd Harmonic A. C. Voltammetry (SHACV), Fourier Transform AC Voltammetry(FTACV)
Stripping Voltammetry
Potentiostatic stripping, Linear stripping, Staircase stripping, Square wave stripping, Differential Pulse Voltammetry Stripping, Normal Pulse Voltammetry Stripping, Differential Normal Pulse Voltammetry Stripping.
Amprometric
Differential Pulse Amperometry(DPA), Double Differential PulseAmperometry(DDPA),Triple Pulse Amperometry (TPA), Integrated Pulse Amperometric Detection (IPAD)
Impedance
EIS vs Frequency (IMP), EIS vs Time (IMPT), EIS vs Potential (IMPE)
Corrosion testing
Electrochemical Noise (EN), Zero Resistance Ammeter (ZRA), Electrochemical Potentiokinetic Reactivation(EPR)
Battery testing
Battery charge and discharge, Galvanostatic charge and discharge
Extensions
Data Logger, Electrochemical stripping/deposition, Bulk electrolysis with Coulometry