▎ 摘　　要

NOVELTY - Preparing self-doped nitrogen-supported palladium porous composite structure oxygen reduction catalyst involves dissolving polyvinylpyrrolidone and polyacrylonitrile in an organic solvent, graphene oxide and palladium salt, adding and mixing uniformly to obtain an electrospinning precursor solution, electrospinning the electrospinning precursor solution to obtain the original silk. The raw silk is obtained by sequentially performing pre-oxidation treatment, carbonization treatment and reduction treatment. USE - Method for preparing self-doped nitrogen-supported palladium porous composite structure oxygen reduction catalyst used as cathode oxygen reduction catalyst of proton exchange membrane fuel cell (claimed). ADVANTAGE - The catalyst is used as a cathode oxygen reduction catalyst for proton exchange membrane fuel cells, and exhibits high catalytic activity and high stability under alkaline conditions. The preparation process of the catalyst is simple and the cost is low, and the preparation process does not need to add additional pore formers and nitrogen doping reagents, which simplifies the process steps and reduces the production cost.