ANODE CATALYST LAYER WITH HIGH REVERSAL TOLERANCE CAPABILITY AND PREPARATION THEREFOR, AND APPLICATION THEREOF TO MEMBRANE ELECTRODE AND FUEL CELL

Disclosed in the present invention are an anode catalyst layer with a high reversal tolerance capability and a preparation therefor, and the application thereof to a membrane electrode and a fuel cell. The anode catalyst layer comprises an anode inner catalyst layer, which is close to a proton exchange membrane, and an anode outer catalyst layer, which is close to a gas diffusion layer, wherein at least the anode inner catalyst layer comprises a reversal-tolerant catalyst and a hydrophilic additive; and the content of the hydrophilic additive in the anode inner catalyst layer is not less than that in the anode outer catalyst layer, or a water-retaining capacity of the anode inner catalyst layer is not less than that of the anode outer catalyst layer. By means of the structural design of an anode catalyst layer, a water-retaining chemical environment is constructed on the side of the anode catalyst layer that is close to a proton exchange membrane, so as to promote electrolysis of water during reversal of a me