Electrocatalytic Oxidation of Methanol on Platinum-Tin Bimetallic Microparticles Electrodeposited at Nichrome Substrate Electrode

Abstract

A novel Pt-Sn bimetallic spherical microparticles electrode for methanol electooxidation was prepared by electrodeposition technique on nichrome substrate. The electrocatalytic performance of Pt-Sn electrode for methanol oxidation was investigated by cyclic voltammetry and chronoamperometry. The experimental results showed that deposited platinum-tin bimetallic microparticles enhanced the catalytic activity for methanol electrooxidation. Above all, anti-poisoning capability against CO of Pt-Sn bimetallic microparticles electrode was increased in comparision to pure platinum microparticles electrode. Moreover, the cost of preparing catalyst greatly decreased because of reduced dosage of contents of noble platinum on the electrode. This may be a promising electrocatalyst in the direct methanol fuel cells (DMFCs) and other liquid fuel cells field.