Cyclic Voltammetry (CV)
CV measurements are most often used to assess the near-equilibrium properties of an electrode including:
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determining the maximum available charge for stimulation pulsing (charge-storage-capacity, CSC)
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identifying the presence of electro-active impurities and contaminants
assessing electrolyte leakage under insulation at electrode sites
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quantifying changes in the electrode during long-term stability studies
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studying redox processes at electrodes (e.g. protein oxidation or oxygen reduction)
Cyclic voltammetry (CV) is a 3-electrode measurement in which the potential of the test electrode is driven at a constant sweep rate with respect to a non-current carrying reference electrode. The current required to change the test electrode potential is provided by a counterelectrode and the CV is constructed from the test electrode potential and current.
It is important to appreciate that the CV response, for any electrode, can appear very different depending on the sweep rate, the geometric area of the electrode, and the roughness of the electrode, even though the electrochemical reactions are unchanged.
Making a CV Measument
Examples Of Cyclic Voltammorgrams: see insert document A
Contact us to discuss Cyclic Voltammetry at EIC Biomedical.
Limitations: The use of test results and test articles for any application is the sole responsibility of the end-user. Results of in vitro testing do not establish in vivo safety. The performance of electrodes and electrode devices and the robustness of encapsulation may depend on the manner of use, post-fabrication history, and other factors that are not predictable.