▎ 摘　　要

NOVELTY - Preparation of high-power long-life membrane electrode involves mixing carbon material, binder and solvent, rolling obtained material by a roller press to form a carbon film, mixing potassium hydroxide, halogen salt, deionized water and absolute ethanol in a predetermined proportion to form a pretreatment solution (A), mixing silver nitrate, deionized water and anhydrous ethanol in a predetermined proportion to obtain a pretreatment solution (B), immersing the carbon film in the solution (A) for treatment, washing with deionized water, immersing the washed film in the solution (B) for treatment, washing with deionized water, irradiating treated carbon film with a mercury lamp, heat-treating the film in a heat-treatment furnace to prepare a waterproof and breathable layer, and compounding the waterproof and breathable layer, a current collector and a catalyst. USE - Preparation of high-power long-life membrane electrode used in metal-air battery (claimed).Preparation method of membrane electrode with high power and long service life used in metal air battery. Can also be used in fuel cell, etc. ADVANTAGE - The membrane electrode has good waterproof performance, excellent power performance and service life, and high electronic conductivity of silver can effectively reduce the interface impedance of the three-phase interface, and improve the power performance of the film electrode. The adhesive agent the carbon film is fibrillated under the action of high temperature, and forming a layer of rough layer on the film surface the layer of the rough layer has super-hydrophobicity, which can effectively prevent the electrode liquid, so as to prolong the service life of the electrode.