Electrochemical behaviour of carbon supported Pt electrocatalysts for H2O2 reduction

Abstract Carbon supported bimetallic Pt-alloys (Pt 0.75 M 0.25 /C, with M = Ni or Co) are investigated as novel electrode materials for H 2 O 2 reduction in acid solution. The alloy electrocatalysts, Pt 0.75 Ni 0.25 /C and Pt 0.75 Co 0.25 /C, as well as carbon supported Pt (Pt/C) are characterised using cyclic voltammetry. The electrocatalytic activity of the materials is studied using a rotating disc electrode system with a combination of linear scan voltammetry and chronoamperometry. It is found that the activity of Pt 0.75 M 0.25 /C electrocatalysts for H 2 O 2 reduction is comparable to the activity of Pt/C electrocatalyst, with Pt 0.75 Co 0.25 /C exhibiting the best performance.

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