A novel electrocatalytic polyaniline electrode for methanol oxidation

Pt clusters were electrodispersed on polymeric films to obtain catalytic el ectrodes for methanol oxidation. The electrodeposit was built up by applyin g either a constant potential or a repetitive square wave potential routine . The performance of the electrodes was followed by measuring the stripping peak potential of adsorbed CO, each assembly metal/Pani/Pt being character ized by SEM and EDAX. Polymeric electrodes, modified with Pt electrodeposit ed by the programmed potential variation had a better electrocatalytic acti vity for CO and methanol oxidation. The novel tailored electrode is the res ult of a balance between a particular morphology and the number of particle s of the catalytic material on the conductive polyaniline matrix.