▎ 摘　　要

NOVELTY - Electrochemical preparation of reduced graphene oxide (rGO)/carbon paper supported precious metal nano-catalyst comprises (1) coating the graphene oxide suspension onto the carbon paper, and drying to obtain the GO/carbon paper carrier, (2) heat-treating the GO/carbon paper carrier in a reducing atmosphere for a predetermined time to obtain rGO/carbon paper carrier, (3) using the rGO/carbon paper carrier as working electrode, carrying out electrochemical deposition in aqueous solution of a precious metal precursor salt by cyclic voltammetry, and electrodepositing precious metal nanoparticles on the rGO/carbon paper carrier, where the difference between the lowest potential controlling the electrochemical deposition minus the reduction potential of precious metal is less than -0.2 V, and the noble metal reduction potential is the reduction potential corresponding to the noble metal ions reduced to noble metal element under electrochemical system where the working electrode is located. USE - The method is useful for electrochemical preparation of reduced graphene oxide/carbon paper supported precious metal nano-catalyst. ADVANTAGE - The catalyst has small particle size, good dispersibility and extremely high electrocatalytic activity.