This technology utilizes the Pulsed Laser Irradiation Scanning on Mixed Salt Solutions method to develop a non-precious metal catalyst based on a Ni-Fe-Mn ternary alloy on metal porous materials, forming porous electrode structures. When applied to Anion Exchange Membrane Water Electrolyzers, it exhibits excellent performance. The technology is simple to operate, cost-effective, and fast to produce, enabling the rapid production of large-area, high-performance catalyst-coated porous electrodes.