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
View PDF2 Cites 3 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
electrical resistivityaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H13/50H01M4/86
CPCY02E60/50
Inventor 不公告发明人
Owner 陈嗳
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap