First implementation of alkaline polymer electrolyte water electrolysis working only with pure water

A new type of water electrolysis is implemented using an alkaline polymer electrolyte (APE) and non-precious metal catalysts, and working only with pure water. The membrane-electrode assembly (MEA) is fabricated by sandwiching a self-crosslinking quaternary ammonia polysulfone (xQAPS) membrane between a Ni-Fe anode and a Ni-Mo cathode, both impregnated with xQAPS ionomer. Such an initial prototype of APE water electrolysis has exhibited decent performance comparable to that of the well-developed alkaline water electrolyzer.