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How can I measure a redox potential from a cyclic voltammogram?

April 26, 2017Cyclic measure potential redox voltammogram

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How can I measure a redox potential from a cyclic voltammogram?

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For a reversible system, it is common to quote the mean of the peak potentials as the redox potential. If the diffusion coefficients of the oxidized and reduced species are similar, this is a good approximation to the formal redox potential. If the system is irreversible, the approximation is not valid, particularly if there is only one peak.