▎ 摘　　要

NOVELTY - A proton exchange membrane fuel cell cathode catalyst is prepared by making platinum (Pt) precursor adsorb on graphene, drying, removing solvent, reducing with formaldehyde or reacting formic acid vapor with Pt precursor for 1.5-2.5 hours at 110-180 degrees C, cooling to room temperature, washing with anhydrous ethanol and distilled water, removing chloride ion from catalyst, and vacuum-drying. USE - Preparation of proton exchange membrane fuel cell cathode catalyst for electrochemical oxidation of methanol. ADVANTAGE - The catalyst has high anti-poisoning ability, good stability, and strong catalytic activity. Preparation process has simple operation and can save energy and protect the environment.