Determination of surface diffusion coefficients of the hydrogen adatom and surface oh radical on platinum electrode

A localized Pt/Nafion interface was established on a planar polycrystalline platinum electrode and the diffusion flux of adsorbed H atoms and OH radical toward the boundary of the interface was measured as the transient current with the cyclovoltammetric technique. Then the surface diffusion coefficients of adsorbed H-atom and OH radical on platinum surface were estimated by solving the differential equation of surface diffusion This article was submitted by the authors in English.