TY - JOUR
T1 - A comparison of the Butler-Volmer and asymmetric Marcus-Hush models of electrode kinetics at the channel electrode
AU - Henstridge, M.C.
AU - Rees, N.V.
AU - Compton, R.G.
N1 - Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/11/1
Y1 - 2012/11/1
N2 - We report a theoretical study of steady-state voltammetry at the channel electrode comparing the Butler-Volmer and Marcus-Hush (both symmetric and asymmetric) models of electrode kinetics. The latter model is shown, for small values of both reorganisation energy and standard rate constant, to exhibit a kinetically-limited steady-state current which is smaller than the mass-transport limiting current given by the Levich equation. However, the combination of parameters required to observe this kinetically-limited current is unlikely to occur in a 'real' system. We conclude that the Butler-Volmer model is sufficient to accurately model voltammetry under these conditions.
AB - We report a theoretical study of steady-state voltammetry at the channel electrode comparing the Butler-Volmer and Marcus-Hush (both symmetric and asymmetric) models of electrode kinetics. The latter model is shown, for small values of both reorganisation energy and standard rate constant, to exhibit a kinetically-limited steady-state current which is smaller than the mass-transport limiting current given by the Levich equation. However, the combination of parameters required to observe this kinetically-limited current is unlikely to occur in a 'real' system. We conclude that the Butler-Volmer model is sufficient to accurately model voltammetry under these conditions.
UR - http://www.scopus.com/inward/record.url?partnerID=yv4JPVwI&eid=2-s2.0-84868598268&md5=9fa8bb27e0cf5b9f8faad7d4eead8c1d
U2 - 10.1016/j.jelechem.2012.10.012
DO - 10.1016/j.jelechem.2012.10.012
M3 - Article
AN - SCOPUS:84868598268
SN - 1572-6657
VL - 687
SP - 79
EP - 83
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
ER -