Electrochemical reactions on catalyst particles with three-phase boundaries.
In fuel cells, electrochemical reactions are often assumed to occur on metal catalyst particles contacting simultaneously the ion-conducting electrolyte and gas phase. Our kinetic Monte Carlo simulations demonstrate that in this case the deviations from the Tafel law in the dependence of the reaction rate on the electrode potential may be related to diffusion of one of the adsorbed reactants along catalyst particles.
Zhdanov
V P
VP
Department of Applied Physics, Chalmers University of Technology, S-41296 Göteborg, Sweden. zhdanov@catalysis.nsk.su