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1. (WO2018012345) GAS DIFFUSION ELECTRODE BASE MATERIAL, METHOD FOR PRODUCING SAME, GAS DIFFUSION ELECTRODE, MEMBRANE ELECTRODE ASSEMBLY AND SOLID POLYMER FUEL CELL

Pub. No.:    WO/2018/012345    International Application No.:    PCT/JP2017/024436
Publication Date: Fri Jan 19 00:59:59 CET 2018 International Filing Date: Wed Jul 05 01:59:59 CEST 2017
IPC: H01M 4/96
D04H 1/4242
D04H 1/492
D06C 23/04
H01M 4/88
H01M 8/10
Applicants: TORAY INDUSTRIES, INC.
東レ株式会社
Inventors: KAJIWARA, Kentaro
梶原健太郎
SHIMOYAMA, Satoru
下山悟
WATANABE, Fumitaka
渡邉史宜
TANIMURA, Yasuaki
谷村寧昭
Title: GAS DIFFUSION ELECTRODE BASE MATERIAL, METHOD FOR PRODUCING SAME, GAS DIFFUSION ELECTRODE, MEMBRANE ELECTRODE ASSEMBLY AND SOLID POLYMER FUEL CELL
Abstract:
The present invention addresses the problem of improving water drainage performance in a gas diffusion electrode formed from a carbon fiber nonwoven fabric. The present invention is a gas diffusion electrode base material that is substantially formed from a carbon fiber nonwoven fabric, wherein the carbon fiber nonwoven fabric has a weight pattern in which high weight regions having relatively high weights and low weight regions having relatively low weights are arranged in a plane, and also has a relief pattern, in which recesses and projections are arranged on at least one surface, said relief pattern being formed independently from the weight pattern.