Mass-transport impedance at channel electrodes: Accurate and approximate solutions
Holm, Thomas; Ingdal, Mats; Fanavoll, Espen Vinge; Sunde, Svein; Seland, Frode; Harrington, David A.
Journal article, Peer reviewed
Permanent lenke
http://hdl.handle.net/11250/2432912Utgivelsesdato
2016Metadata
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- Institutt for materialteknologi [2597]
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Sammendrag
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.