Hot pressing assembly of membrane electrodes for electrolysis and sharing of membrane electrode application knowledge

This project involves an optimized hot-pressing assembly method for membrane electrodes for solid electrolyte (SPE) electrolysis. The membrane electrode is assembled by hot pressing of the catalyst layer, cathode gas diffusion layer, anode gas diffusion layer, proton exchange membrane and other components, and this method aims to optimize the heating temperature and assembly pressure during the assembly of the membrane electrode. The membrane electrode assembly prepared in this project has good performance when used as a proton exchange membrane (PEM) water electrolytic cell. This project has extensive utilization value in renewable fuel cell (RFC), photoelectric catalysis, and electrolytic hydrogen generator devices.

In recent years, solid polymer electrolyte (PEM) water electrolysis technology has become a research hotspot in the field of hydrogen production because of its high efficiency, zero emission, compact structure, environmental friendliness, and high product purity, and its high-purity oxygen has also been used in aerospace, medical, analytical and other fields. As the core component of PEM water electrolytic cell, the structural optimization of membrane electrode is the focus of researchers in various countries to improve the electrolysis efficiency. The membrane electrode assembly is the core of the electrolytic cell, which directly affects the electrolysis efficiency, electrolysis energy consumption, electrolysis cost and the life of the electrolytic cell. The traditional membrane electrode preparation process is to prepare a gas diffusion layer electrode by coating the catalyst on the gas diffusion layer. However, the surface contact between the gas diffusion layer electrode and the proton exchange membrane is not close, which will produce a large voltage drop between the two poles. Therefore, catalyst-coated electrodes, which are more conducive to reducing the contact resistance between the catalytic layer and the proton exchange membrane, have received widespread attention