K. Darowicki et J. Orlikowski, Impedance investigations of the mechanism of oxygen evolution on compositeelectrodes, J ELCHEM SO, 146(2), 1999, pp. 663-668
Impedance measurements of the oxygen evolution reaction on a composite elec
trode prepared from an ethylene-propylene terpolymer (EPDM) admired with ac
etylene carbon black have been carried out. A theoretical analysis of measu
red impedance is presented. The mechanism of the oxygen evolution reaction
has been determined. The oxygen evolution reaction is composed of two elect
rochemical steps and one chemical step. The slowest step for the oxygen evo
lution reaction is the first charge transfer step which is based on the for
mation of an intermediate OHAd adsorbed species. (C) 1999 The Electrochemic
al Society. S0013-4651(98)03-112-7. All rights reserved.