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Warp-overlapping-structure carbon cloth gas diffusion layer for fuel cell

A gas diffusion layer and fuel cell technology, applied to electrical components, battery electrodes, structural parts, etc., to achieve the effects of resistance to changes in environmental conditions, long-term stable and reliable performance, and improved conductivity

Inactive Publication Date: 2007-08-29
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of single-layer carbon cloth is simple. Although it has become a beginning in the production method of the gas diffusion layer, it still needs further research and development to meet the multi-layer requirements of the gas diffusion layer.

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
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  • Warp-overlapping-structure carbon cloth gas diffusion layer for fuel cell

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Embodiment Construction

[0023] In Fig. 1, figure a is a diagram of warp yarn combination state and weaving movement, which is shown as the ups and downs and ups and downs of carbon fiber warp yarn 1 (a total of 8, represented by a curve) relative to carbon fiber weft yarn 2 (represented by a dot) in a complete structure. Movement, there are four groups of double-weave (d1, d2, d3, d4) in the fabric from left to right, and the cross-section of each group of double-weave structure is the longitudinal cross-section of the fabric in Figure d shown. Figure b and Figure c are the weaving process diagrams used when the carbon cloth of this embodiment is weaved on the upper machine, Figure b represents the drafting diagram, and Figure c is the pattern diagram.

[0024] It can be seen and deduced from the structure of the longitudinal cross-sectional view d of the carbon cloth in the embodiment:

[0025] 1. Both sides of the carbon cloth are composed of warp yarns with 3 floating and 1 sinking long warp floa...

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Abstract

The invention is a method for making fuel battery gas diffusion layer able to improve gas-water-electricity transparent conductivity, on a loom, adopting carbon fiber as raw material to weave a tissue structured diffusion layer with longer warps and floats, isolated by wefts as brackets and overlapped and arranged in parallel.

Description

Technical field [0001] The invention relates to a method for manufacturing a fuel cell gas diffusion layer, in particular to a method for manufacturing a woven carbon cloth gas diffusion layer with a warp yarn overlapping structure. Background technique [0002] In a proton exchange membrane fuel cell, the gas diffusion layer not only plays a role in supporting the catalyst layer and stabilizing the electrode structure, but also has multiple functions of providing gas channels, electron channels and drainage channels for electrode reactions. The selection of high-performance gas diffusion layer materials is conducive to the realization of the redistribution of reaction gases and reaction products-water between the flow field and the catalytic layer, which can improve the electrode performance by enhancing electrical conductivity, improving electrode performance, battery operation stability, and operation life. It has played an important role in the comprehensive performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D1/00D03D13/00H01M4/88
CPCY02E60/50
Inventor 周罗庆邹利张珺唐军韩潇马慧
Owner JIANGNAN UNIV
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