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Preparation method for special high-performance carbon paper for fuel cell

A fuel cell, high-performance technology, used in special paper, battery electrodes, synthetic cellulose/non-cellulose material pulp/paper, etc., can solve problems such as secondary energy consumption, achieve environmental protection in the production process, avoid high-temperature carbonization and The effect of graphitization and simple process flow

Inactive Publication Date: 2015-01-07
陈嗳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon paper is produced by this method, and the raw material used is carbon fiber. High-temperature carbonization is required when making carbon fiber, and high-temperature carbonization is also required when making carbon paper. This is secondary energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of high-performance carbon paper for fuel cells is as follows:

[0024] A. Prepare polypropylene cyano carbon fiber and process through coupling modification;

[0025] B. Put 65 parts of polypropylene cyano carbon fibers treated with coupling modification into a dispersion bucket with a stirrer, add water and cationic polyacrylamide dispersant, wherein the mass fraction of polypropylene cyano carbon fibers is 0.5%, fully Stir and decompose until the polypropylene cyano carbon fiber is completely dispersed into a single fiber to form a polypropylene cyano carbon fiber slurry, the slurry has a water phase viscosity of 60S;

[0026] C. Take 15 parts of coniferous wood fiber and put it into a beater that has been stored with an appropriate amount of water, so that the mass fraction of coniferous wood fiber in water is 1%, first disperse for 10 minutes, and then beat with a light knife for 30 minutes, until the coniferous wood fiber is completely dispe...

Embodiment 2

[0032] The preparation method of high-performance carbon paper for fuel cells is as follows:

[0033] A. Prepare 50 parts of polypropylene cyano carbon fibers and 20 parts of pitch-based carbon fibers, which are modified by coupling;

[0034] B. Put the polypropylene cyano carbon fiber and pitch-based carbon fiber after coupling modification into a dispersion bucket with agitator, add water and polyethylene oxide dispersant, wherein the polypropylene cyano carbon fiber and pitch-based carbon fiber The total mass fraction is 1.0%, fully stirred and decomposed until completely dispersed into single fibers to form a carbon fiber slurry, the viscosity of the slurry in the water phase is 70S;

[0035] C. Take 15 parts of coniferous wood fiber and put it into a beater that has been stored with an appropriate amount of water, so that the mass fraction of coniferous wood fiber in water is 2%, first disperse for 20 minutes, and then beat with a light knife for 60 minutes, until the con...

Embodiment 3

[0041]The preparation method of high-performance carbon paper for fuel cells is as follows:

[0042] A. Prepare 50 parts of polypropylene cyano carbon fibers and 25 parts of pitch-based carbon fibers, which are modified by coupling;

[0043] B. Put the polypropylene cyano carbon fiber and pitch-based carbon fiber after coupling modification into a dispersion bucket with agitator, add water and polyethylene oxide dispersant, wherein the polypropylene cyano carbon fiber and pitch-based carbon fiber The total mass fraction is 1.0%, fully stirred and decomposed until completely dispersed into single fibers to form a carbon fiber slurry, the viscosity of the slurry in the water phase is 70S;

[0044] C. Take 10 parts of coniferous wood fiber and put it into a beater that has stored an appropriate amount of water, so that the mass fraction of coniferous wood fiber in water is 2%, first disperse for 20 minutes, and then beat with a light knife for 60 minutes, until the coniferous woo...

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PUM

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Abstract

The invention relates to special high-performance carbon paper for a fuel cell, and a preparation method of the high-performance carbon paper. By taking chopped carbon fibers, plant fiber, thermally bonded fibers and carbon black as raw materials, the carbon paper is prepared by the following steps: performing papermaking by using a wet paper-making process after performing defibering, pulping and proportioning, and processing by coating a waterproof coating. The product disclosed by the invention is convenient to use; high-temperature carbonization and graphitization are avoided; repeated energy consumption is avoided fundamentally; the carbon paper can directly serve as a substrate for preparing an electrode of the fuel cell without pretreatment.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a preparation method of high-performance carbon paper for fuel cells. Background technique [0002] At present, the base materials of the gas diffusion layer mainly include carbon fiber paper, carbon fiber woven cloth, non-woven cloth and carbon black paper, etc., and high-performance carbon paper is widely used. Carbon paper is usually made of carbon fiber plus an appropriate amount of adhesive to make paper, and then impregnated with carbonizable resin, hot-pressed, solidified, and high-temperature carbonized. At present, Japan's Toray company has applied for many carbon paper patents, and it is still improving and perfecting in recent years. US2005100498 is a US patent applied by MITSUBISHI RAYON Corporation of Japan in 2003, and Japanese patent JP2003323897 applied in 2002 introduces an electrode material and carbon paper material with high electrical conductivit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H13/50H01M4/86
CPCY02E60/50
Inventor 不公告发明人
Owner 陈嗳
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