Stationary and non-stationary electrochemical response of polycrystalline indium in alkaline media

摘要: Abstract Stationary and non-stationary responses of polycrystalline indium electrodes in NaOH (0.05–4 M) solution at 25°C were studied. Anodically formed films, their kinetics chemical stability discussed as a function potential domain, time diffusing process, hydroxide concentration. These processes investigated through potentiostatic polarisation conventional voltammetry transients techniques. SEM observations also applied. The overall anodic reaction can be interpreted model comprising number parallel reactions following the initial formation In(OH)ad species electrode surface level. relative contribution each is determined by concentration OH− ion interface. behaviour appears to under mixed control, plus diffusion process. On increasing pH, control process becomes film.