Mass-transport impedance at channel electrodes: Accurate and approximate solutions
Journal article, Peer reviewed
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Original versionElectrochimica Acta. 2016, 202 84-89. 10.1016/j.electacta.2016.03.096
Accurate numerical electrochemical impedance spectra at channel electrodes are obtained using commercial finite element method software. These agree with experimental measurements on the hexaammineruthenium(II/III) reversible redox couple. The numerical solutions are used as a benchmark to test the validity of some common analytical approximations for the mass-transport impedance.