Two Channel EIS Bipotentiostat CS2350M For Hydrogen Permeation Test

EIS bipotentiostat CS2350M hydrogen permeation test has two sets of built-in independent potentiostat /galvanostat. The two channels can jointly complete experiment of RRDE and hydrogen permeation test. Full floating module and electrical isolation design guarantee each channel is totally independent, which ensures accurate data. EIS bipotentiostat CS2350M hydrogen permeation test

is the real double-channel potentiostat. Experiments can also be conducted at the same time in each channel(see below picture: the 2 channels connect to 2 coin cells).It uses Ethernet connection. EIS module is included in both channels. Each set provides full electrochemical techniques including EIS.

Applications of EIS bipotentiostat CS2350M

EIS bipotentiostat CS2350M can do all that a single-channel potentiostat can, as there are 2 sets potentiostat/galvanostat inside of CS2350M eis Bipotentiostat/Bigalvanostat. EIS bipotentiostat CS2350M can be used in the following applications, and can do testing on two samples at the same time.

(1) Electrosythesis, electrodeposition (electroplating), anodic oxidation, electrolysis

(2) Electrocatalysis such as Oxygen reduction reaction (ORR), OER, HER, CO2 reduction.
(3) Li-ion battery, solar cell, fuel cell, supercapacitor, advanced function materials, sensor, etc
(4) Corrosion behavior of metals, and anti-corrosion evaluation

(5) Fast evaluation of inhibitor, water quality stabilizer, coating, and cathodic protection efficiency.

One of the typical applications of EIS bipotentiostat CS2350M

Hydrogen permeation Test (HDT)

Photo of EIS bipotentiostat CS2350M hydrogen permeation test setup

CS2350M bipotentiostat is combined with H-cells. By measuring current of cathode hydrogen charging and hydrogen atoms anode oxidation, it can further calculate the diffusion coefficient of hydrogen atoms in metal and hydrogen flux.

Hydrogen permeation test principle

The electrochemical method proposed by Devanathan-Stachurski to measure the diffusion rate of atomic hydrogen in metals.

Diagram of EIS bipotentiostat CS2350M hydrogen permeation test

The device is composed of two electrolytic cells. The left one is hydrogen elimination chamber (anode chamber). A constant potential is applied on the anode surface of the specimen. The hydrogen atoms diffused from the cathode surface are oxidized on the anode surface.The right cell is the hydrogen charging chamber (cathode chamber). During hydrogen charging, the cathode current is applied on the cathode surface.

Specifications of EIS bipotentiostat CS2350M hydrogen permeation test

Techniques- EIS bipotentiostat CS2350M hydrogen permeation test

Bipotentiostat

• Hydrogen permeation(Diffusion) Test (HDT)
• Rotating Ring Disk Electrode(RRDE)
• Faradaic efficiencyTest(FE)

Stable polarization

• Open Circuit Potential (OCP)
• Potentiostatic (I-T curve)
• Galvanostatic
• Potentiodynamic (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)

Voltammetry

• 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)

Electrochemical Impedance Spectroscopy (EIS)

• EIS vs Frequency (Nyquist, Bode)
• 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)

Amperometric

• Differential Pulse Amperometry (DPA)
• Double Differential Pulse Amperometry (DDPA)
• Triple Pulse Amperometry (TPA)
• Integrated Pulse Amperometric Detection (IPAD)

Stripping Voltammetry

• Potentiostatic Stripping
• Linear Stripping
• Staircase Stripping
• Square Wave Stripping
• Differential Pulse Voltammetry Stripping
• Normal Pulse Voltammetry Stripping
• Differential Normal Pulse Voltammetry Stripping

Extensions

· Data Logger

· Electrochemical Stripping/ Deposition

· Bulk Eletrolysis with Coulometry (BE)

· Rs Measurement

Application

Corrosion: Corrtest potentiostats incl. EIS bipotentiostat CS2350M have 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.

Left: Polarization curves of Ti-alloy& stainless steel in 3%NaCl solution Right: EN of low-carbon steel in 0.05mol/LCl+0.1mol/LNaHCO3

EIS bipotentiostat CS2350M 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

Energy

With techniques LSV, CV, galvanostatic charge and discharge (GCD), Constant potential/ current EIS, and precise IR compensation circuit, Corrtest potentiostats incl. EIS bipotentiostat CS2350M 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.

Salt spray aging test of high impedance coating CV curve of PPy supercapacitor in 0.5 mol/L H2SO4 solution

Electroanalysis

Corrtest potentiostat incl. EIS bipotentiostat CS2350M 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

Electro-catalysis

● Corrtest potentiostat incl. EIS bipotentiostat CS2350M 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.

CorrTest Instruments Co. (China) manufactured her first full-digital potentiostat/galvanostat for corrosion electrochemistry in 1995. After 29 years of research and development, CorrTest has developed a series of electrochemical workstations dedicated to electroanalysis, corrosion, electrocatalysis, energy material research, sensors, electrodeposition etc. CorrTest has registered CorrTest^® trademark and acquired a number of patents, software copyrights.

CorrTest has also developed different kinds of corrosion sensors and meters, corrosion management networks for on-site corrosion monitoring and risk evaluation of oilfields, petrochemicals, construction and offshore wind farms.

“Quality from Technology", "Progess from Profession" is our motto for research and development. CorrTest will continue to provide customers with high-quality products and professional services.

1995：1^st electrochemical potentiostat was made based on AD&DA multifunction board

2007：CorrTest was officially established with 1^st generation CS350 potentiostat designed

2015：2^nd generation CS350G potentiostat with the achievement of 1MHz impedance

2016：Listed on China’s New OTC market and embarked on 1^st generation corrosion meters

2017：3^rd generation CS350H potentiostat, specializing in EIS for high-impedance coating

2021：4^th generation, CS350M and CS310X multichannel products

2023：5^th generation, CS2020B high-power booster to enhance CS350M output current