Electrochemical workstation is the abbreviation of electrochemical measurement system, which is a commonly used measurement equipment for electrochemical research and teaching. The measuring system is composed of a complete machine, which comprises a fast digital signal generator, a high-speed data acquisition system, a potential current signal filter, a multi-stage signal gain, an IR drop compensation circuit, a potentiostat, and a constant current meter. It can be used directly for steady-state current measurement on ultra-micro electrodes. If connected to a micro current amplifier and a shielded box, a current of 1 pA or less can be measured. If connected to a high current amplifier, the current range can be extended to ±2A. The time scale of some experimental methods can be up to 10 times, and the dynamic range is extremely broad. It can be measured by cyclic voltammetry, AC impedance method, AC voltammetry, etc. The workstation can work with four electrodes at the same time. The four electrodes can be used for electrochemical measurements at the liquid/liquid interface and are also important for high current or low impedance electrolytic cells (eg batteries), eliminating measurement errors due to cable and contact resistance. The instrument also has an external signal input channel that records the externally input voltage signal, such as a spectral signal, while recording the electrochemical signal. This is extremely convenient for experiments such as spectroelectrochemistry.
Basic classification
Electrochemical Workstation
There are two main types of electrochemical workstations, single-channel workstations and multi-channel workstations. The difference is that multi-channel workstations can perform multiple sample tests at the same time. Compared with single-channel workstations, they have higher test efficiency and are suitable for large-scale R&D testing. Speed ​​up research and development. Electrochemical workstations are already commercial products. Different types of products from different manufacturers have different electrochemical measurement technologies and functions, but the basic hardware parameters and software performance are the same.
Electrochemistry is the science that studies the relationship between electrical and chemical reactions. The interaction between electrical and chemical reactions can be accomplished by a battery or by high-voltage electrostatic discharge, which is collectively referred to as electrochemistry, which is a branch of electrochemistry called discharge chemistry. Electrochemistry is therefore often referred to as "the science of batteries."
Folding basic original
Rational
The essence of an electrochemical workstation is an instrumentation for controlling and monitoring changes in electrochemical cell currents and potentials, as well as other electrochemical parameters.
Electrochemical Cell: Galvanic Cell: Chemical Energy → Electrical Energy; Electrolytic (Electrolytic): Electrical Energy → Chemical Energy
Instructions
Cyclic voltammetry
2. Linear sweep voltammetry
3. Parallax pulse voltammetry
4. Constant current technology
5. Potential step technology
Application field
1. Electrochemical mechanism research
2. Biotechnology research
3. Qualitative and quantitative analysis of the substance.
4. Conventional electrochemical testing.
5. Nanoscience research
6. Corrosion inhibitor evaluation
7. Sensor research
8. Metal corrosion research
9. Battery research
10. Electroplating research
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