Multi-acid self-humidification composite proton exchange membrane for fuel cell and preparing process thereof

Abstract

This invention relates to proton exchanging film fuel battery self humidification complex film. It is self humidification complex proton exchanging film used in proton exchanging film fuel battery and its preparation method. Multiple oxometallate and solid high molecular electrolyte solution are sprayed or cast at one or two sides of t exchanging film to form self humidification complex film. The complex film made in this invention has strong self humidification effect, and its making technique is simple, material cost is low, so it can be used to self humidification proton exchanging film fuel battery which fuel is hydrogen and methanol.

Description

technical field [0001] The invention relates to a self-humidifying composite membrane for a proton exchange membrane fuel cell, in particular to a self-humidifying composite proton exchange membrane for a proton exchange membrane fuel cell and a preparation method thereof. Background technique [0002] A proton exchange membrane fuel cell (PEMFC) is a power generation device that directly converts the chemical energy in fuel and oxidant into electrical energy through an electrochemical reaction. It uses a solid polymer membrane with good proton conductivity as the electrolyte. One side of the membrane is an anode composed of a catalytic layer and a gas diffusion layer, and the other side is a cathode composed of a catalytic layer and a gas diffusion layer. The layer is between the gas diffusion layer and the proton exchange membrane, and the electrode catalyst layer provides the electrochemical reaction. The anode, solid polymer electrolytic membrane and cathode are pressed...

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Problems solved by technology

The humidification system increases the volume of the entire system and reduces the specific energy density of PEMFC.

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