The invention provides an integrated
gas diffusion electrode based on additive manufacturing, a preparation method of the integrated
gas diffusion electrode and an integrated PEM
electrolysis water membrane
electrode, and relates to the field of membrane electrodes. The integrated
gas diffusion electrode comprises a bipolar plate, a
diffusion layer, a
metal catalyst layer and an
alloy catalyst layer which are integrally formed, and a gas flow channel for gas circulation is formed in the bipolar plate. The preparation method comprises the following steps: carrying out additive manufacturing on the bipolar plate by using continuous
laser and forming a gas flow channel; carrying out additive manufacturing on the
diffusion layer by using continuous
laser; carrying out additive manufacturing on the
metal catalyst layer by using ultrafast
laser; and carrying out additive manufacturing on the
alloy catalyst layer by using an ultrafast laser and
aerosol injection process. The integrated PEM electrolyzed water membrane
electrode is made of a
proton exchange membrane and an integrated gas
diffusion electrode. According to the invention, high performance of the membrane electrode can be ensured, the number of components and the volume and weight of the membrane electrode can be reduced by using an additive
manufacturing technology, and configuration is simplified.