Preparation method of film electrode for solid polymer electrolyte water electrolysis

Abstract

The invention relates to a method for preparing membrane electrode for solid polymer water electrolyte. It evaporates solid polymer electrolyte solution and forms film, couples catalytic layer composed of catalyst and solid polymer electrolyte on two sides to form integrated membrane electrode, then crystalizes membrane electrode to realize co-crystallization for solid polymer electrolyte. The combination between membrane and catalytic layer is tight and the stratification between membrane and electrode caused by gas evolution and wahsing during water electrolysis process is solved. The invention can produce solid polymer water electrolyte with high performance, high stability and high durability.

Description

technical field [0001] The invention relates to solid polymer electrolyte water electrolysis, in particular to a preparation method of a novel membrane electrode for solid polymer electrolyte water electrolysis. Background technique [0002] With the development of society and economy in recent years, the supply crisis of fossil energy has emerged. The voice of human beings to protect the earth's environment is increasing day by day. How to develop new energy and efficiently use energy has become the focus of great attention of governments and business circles all over the world. As a clean and efficient energy carrier, hydrogen energy is known as a symbol of the economic era in the 21st century. Water electrolysis is a very mature technology for producing high-purity hydrogen and oxygen. Alkaline water electrolysis is commonly used at present, and its disadvantage is that the liquid electrolyte is prone to problems such as loss, corrosion and overflow. Solid polymer elec...

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Problems solved by technology

The advantage of this method is that it can greatly reduce the thickness of the catalytic layer, improve the utilization rate of Pt, and reduce the loading amount of Pt, but the process is too complicated and not suitable for commercial production.

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