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Electrochemical workstation is the abbreviation of electrochemical measurement system, is a commonly used measurement equipment
for electrochemical research and teaching.
There are two main categories, single-channel workstations and multi-channel workstations, which are used in biotechnology and qualitative and quantitative analysis of substances
.
It can be used directly for steady-state current measurement on ultra-micro electrodes
.
If connected to a microcurrent amplifier and shielding box, currents
of 1 pA or less can be measured.
If connected to a high-current amplifier, the current range can be widened to ±100A
.
Some experimental methods have a time scale of magnitude of l0 and a dynamic range that is so wide that some workstations do not even have the limitation of
time recording.
Cyclic voltammetry, AC impedance method, AC voltammetry, current titration, potentiometric titration and other measurements
can be performed.
The workstation can operate in a two-electrode, three-electrode and four-electrode manner
at the same time.
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 (e.
g.
batteries), which can cause measurement errors
due to cables and contact resistance.
The instrument also has an external signal input channel that records external input voltage signals such as spectral signals, fast kinetic reaction signals, etc.
while recording electrochemical signals
.
This is extremely convenient
for experiments such as spectroelectrochemistry and electrochemical kinetics.
Electrochemical workstations mainly have 2 categories, single-channel workstations and multi-channel workstations, the difference is that multi-channel workstations can simultaneously carry out multiple sample tests, higher test efficiency than single-channel workstations, suitable for large-scale research and development testing needs, can significantly accelerate the speed
of research and development.