Preparation method of diffusion layer with catalytic action promoting function

Abstract

The invention provides a preparation method of a diffusion layer with a catalytic action promoting function. The preparation method comprises the steps of taking straw substances at the soft part of the center of corn straw, and then drying the straw substances; cutting straw substances into long strips, then putting the long strips into a polar solvent to form a polar solution, and fully stirringand mixing; adding ceramic particles and a carbon oxide material into the polar solution, and fully stirring; then adding carbonyl metal into the polar solution, and fully stirring; and then carryingout pulping and papermaking, resin impregnation and carbonization in sequence, and finally acquiring the diffusion layer. Compared with metal, the straw substance adopted by the invention has betterinertness, so that the possibility of damaging a carbon skeleton is reduced in the carbonization process, and the overall permeability of the diffusion layer is ensured while the strength of the carbon paper is ensured.

Description

technical field [0001] The present application relates to a method for preparing a diffusion layer with a catalytically promoted effect. Background technique [0002] A fuel cell is an electrochemical power generation device that directly converts chemical energy into electrical energy through an electrochemical reaction instead of using thermal energy as a transfer medium. Therefore, the energy conversion efficiency of a fuel cell is very high. There are many devices that can complete the fuel cell process. According to different electrolytes, they can be divided into alkaline fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells, solid oxide fuel cells, and proton exchange membrane fuel cells. [0003] For proton exchange membrane fuel cells, it is equivalent to the "reverse" device of water electrolysis in principle. Its single cell is composed of anode, cathode and proton exchange membrane. The anode is the place where the hydrogen fuel is oxidized, and th...

AI Technical Summary

Problems solved by technology

In order to accelerate the reaction, a diffusion layer is generally set between the electrode and the catalyst to promote the diffusion of gas, but this setting causes many adverse effects between the catalyst and the diffusion layer, which greatly reduces the available time of the diffusion layer and the catalyst

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