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

A proton exchange membrane and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems of increasing the volume and reducing the specific energy density of PEMFC, so as to improve the open circuit, maintain mechanical properties and stability, and stability Good results

Active Publication Date: 2006-11-15
SUNRISE POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The humidification system increases the volume of the e...

Method used

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

Examples

Experimental program
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Embodiment 1

[0027] Mix the aqueous solution of phosphotungstic acid with a weight concentration of 20% and the isopropanol solution of Nafion with a weight concentration of 10% at a weight ratio of Nafion:phosphotungstic acid=3:1, and then ultrasonically (frequency: 4000 Hz) for 2 hours to mix uniform. Spray the mixed solution onto both sides of the Nafion212 membrane to form a proton exchange membrane with a self-humidifying layer; the thickness of the membrane is 0.054mm.

Embodiment 2

[0029] Mix silicotungstic acid ethanol solution with a weight concentration of 50% and SPEEK DMF solution with a weight concentration of 10% at a weight ratio of SPEEK: phosphotungstic acid = 3:1, and then ultrasonically (frequency: 4000 Hz) for 2 hours to mix evenly. Spray the mixed solution onto one side of the SPEEK membrane to form a proton exchange membrane with a self-humidifying layer; the thickness of the membrane is 0.052mm.

Embodiment 3

[0031] The aqueous solution of 40% phosphomolybdic acid and the NMP solution of sulfonated polysulfone with a weight concentration of 10% are mixed in a weight ratio of sulfonated polysulfone: phosphomolybdic acid=10:1, and then ultrasonic (frequency: 4000 Hz) Mix well for 2 hours. Spray the mixed solution onto both sides of the sulfonated polysulfone membrane to form a proton exchange membrane with a self-humidifying layer; the thickness of the membrane is 0.179mm.

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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...

Claims

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Application Information

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IPC IPC(8): C08J5/22H01M8/1018H01M8/1041H01M8/1069
CPCY02E60/50
Inventor 李明强张华民衣宝廉
Owner SUNRISE POWER CO LTD
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