▎ 摘　　要

NOVELTY - A low-load gradient high-performance fuel cell membrane electrode comprises a proton exchange membrane (1), a negative electrode catalyst layer (2) provided on one side of the proton exchange membrane, and a positive electrode catalyst layer (3) provided on other side of the proton exchange membrane. The negative electrode catalyst layer comprises a negative electrode layer (21) close to the proton exchange membrane and a negative electrode layer (22) away from proton exchange membrane. The positive electrode catalyst layer comprises a positive electrode layer (31) close to the proton exchange membrane, and a positive electrode layer (32) away from the proton exchange membrane. A gas diffusion layer (11) is provided on the outside of the negative electrode layer (22) and the positive electrode layer (32). USE - Low-load gradient high-performance membrane electrode is used as core component of fuel cell for mobile power supply. ADVANTAGE - By adopting different I/C of the catalytic layer coating, the electrode ensures the small gas transmission resistance and proton conduction capability, especially the performance improving effect of high electric density is obvious. The electrode has low load gradient and high performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the low-capacity gradient high-performance fuel cell membrane electrode, which involves mixing and dispersing carbon-supported catalyst, resin, solvent and additive to prepare a catalytic layer slurry with ionomer/carbon (I/C) ratio of 0.01-0.45, coating the catalytic layer slurry on the proton exchange membrane layer by layer to obtain a gradient five-in-one membrane electrode, loading platinum in the single catalytic layer in an amount of 0.01-0.3 mg/cm2, bonding the gradient five-in-one membrane electrode to the gas diffusion layer, and hot-pressing to obtain seven-in-one membrane electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the low-load gradient high-performance fuel cell membrane electrode. 1Proton exchange membrane 2Negative electrode catalyst layer 3Positive electrode catalyst layer 11Gas diffusion layer 21, 22Negative electrode layers 31, 32Positive electrode layers