Proton exchange membrane electrolysis water membrane electrode and preparation method thereof

The invention provides a proton exchange membrane electrolysis water membrane electrode and a preparation method thereof. The preparation method of the proton exchange membrane electrolysis water membrane electrode comprises the following steps: mixing graphene oxide, a catalyst, resin and a solvent to obtain slurry; coating the slurry on the surface of a base material, and sequentially carrying out heat treatment and freeze drying to obtain a base material containing a catalyst layer; and transferring the catalyst layer in the substrate containing the catalyst layer to the surface of the proton exchange membrane to obtain the proton exchange membrane electrolysis water membrane electrode. In the heat treatment process, graphene oxide in the slurry can be subjected to in-situ reduction by the solvent to generate reduced graphene oxide, the reduced graphene oxide has a porous three-dimensional skeleton structure after being freeze-dried, the catalyst is fixed in the porous three-dimensional skeleton structure,