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A kind of preparation method of graphene carbon fiber conductive paper for fuel cell electrode

A fuel cell electrode, graphene carbon technology, applied in pulp beating/refining method, synthetic cellulose/non-cellulose material pulp/paper, special paper, etc., can solve problems such as being in the laboratory stage, and achieve enhanced electrical conductivity The effect of increasing the intensity, increasing the intensity, and strong far-infrared radiation

Active Publication Date: 2018-04-13
北京绿能嘉业新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production of graphene carbon conductive paper is less, almost none, and some are only in the laboratory stage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this embodiment, the preparation method of graphene carbon fiber conductive paper, which is a porous diffusion layer material for fuel cell electrodes, is as follows:

[0038] 1. Surface treatment of graphene powder and material selection of graphene

[0039] 1. Material selection of graphene powder

[0040] Graphene powder is selected for surface active treatment. There are many manufacturers of graphene in my country, such as: Jiangsu, Qingdao, Sichuan, Northeast China, Anhui and other places have graphene manufacturers. It is best to use graphene oxide, because graphene oxide has oxygen-containing functional groups, is easy to dissolve in water or other solvents, and is easy to disperse, and can be better compounded with plant fibers and chopped carbon fibers.

[0041] Wherein, the graphene powder is a few-layer graphene material with 3-6 layers, the thickness of the graphene powder is less than 10 nm, and the width in the horizontal direction is 10-15 nm.

[00...

Embodiment 2

[0065] In this embodiment, the preparation method of graphene carbon fiber conductive paper, which is a porous diffusion layer material for fuel cell electrodes, is as follows:

[0066] 1. Surface treatment of graphene powder and material selection of graphene

[0067] 1. Material selection of graphene powder

[0068] Graphene powder is selected for surface active treatment. There are many manufacturers of graphene in my country, such as: Jiangsu, Qingdao, Sichuan, Northeast China, Anhui and other places have graphene manufacturers. It is best to use graphene oxide, because graphene oxide has oxygen-containing functional groups, is easy to dissolve in water or other solvents, and is easy to disperse, and can be better compounded with plant fibers and chopped carbon fibers.

[0069] Wherein, the graphene powder is a few-layer graphene with 3-6 layers, the thickness of the graphene powder is less than 10 nm, and the width in the horizontal direction is 10-15 nm.

[0070] 2. Su...

Embodiment 3

[0093] In this embodiment, the preparation method of graphene carbon fiber conductive paper, which is a porous diffusion layer material for fuel cell electrodes, is as follows:

[0094] 1. Surface treatment of graphene powder and material selection of graphene

[0095] 1. Material selection of graphene powder

[0096] Graphene powder is selected for surface active treatment. There are many manufacturers of graphene in my country, such as: Jiangsu, Qingdao, Sichuan, Northeast China, Anhui and other places have graphene manufacturers. It is best to use graphene oxide, because graphene oxide has oxygen-containing functional groups, is easy to dissolve in water or other solvents, and is easy to disperse, and can be better compounded with plant fibers and chopped carbon fibers.

[0097] Wherein, the graphene powder is a few-layer graphene with 3-6 layers, the thickness of the graphene powder is less than 10 nm, and the width in the horizontal direction is 10-15 nm.

[0098] 2. Su...

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Abstract

The invention relates to the field of porous diffusion forming materials for fuel cell electrodes, specifically a base material for manufacturing a porous diffusion layer of a fuel cell electrode, as well as a preparation method and a production method of graphene carbon fiber conductive paper. The method adopts graphene powder, short chopped carbon fibers and plant fiber raw wood pulp, wherein graphene powder mixed liquid, short chopped carbon fiber mixed liquid and plant fiber mixed liquid are prepared into pulp, the pulp diluted by mixing with water is put onto a screen box for papermaking, the made paper is conveyed via a blanket, dried in a drying cylinder and rolled by a paper rolling device, and the required graphene carbon fiber conductive paper is thus obtained. The graphene carbon fiber conductive paper is 80-100 grams per square meter, the porosity is 20-40%, and the conductive sheet resistance is 3-10 ohms per square centimeter. The graphene carbon fiber conductive paper can be produced in batch on a common papermaking machine, and meets the requirement for manufacturing porous diffusion layer electrodes of fuel cells.

Description

technical field [0001] The invention relates to the field of fuel cell electrode porous diffusion layer materials, in particular to a basic material for manufacturing a fuel cell electrode porous diffusion layer, a preparation method and a production method of graphene carbon fiber conductive paper. Background technique [0002] The fuel cell gas diffusion layer material plays the role of supporting the catalyst layer and stabilizing the electrode structure in the fuel cell, and also provides fuel gas channels, electron channels and drainage channels for the fuel cell reaction. Different diffusion layer materials have different effects on the structure, preparation method and performance of fuel cell electrodes, and the differences are quite large. Commonly used gas diffusion layer materials to prepare electrodes are: carbon fiber paper, carbon cloth and carbon black paper, etc. Although they have a uniform porous thin-layer structure, they have good chemical stability and h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21H15/12D21H13/50D21H17/00D21H21/14D21H21/16D21H21/10D21H21/08D21D1/30
CPCD21D1/30D21H13/50D21H15/12D21H17/00D21H21/08D21H21/10D21H21/14D21H21/16D21H27/00
Inventor 石伟
Owner 北京绿能嘉业新能源有限公司
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