Patent ID: 7150934
Filing Date: 2006-12-19
Classification: D03D,D10B,H01M,Y02E,Y02P

Abstract:
1. An electrolyte membrane-electrode assembly comprising a hydrogen ion conductive polymer electrolyte membrane and a pair of electrodes sandwiching the polymer electrolyte membrane therebetween, each said electrode comprising a catalyst layer and a gas diffusion layer attached to said polymer electrolyte membrane, wherein: said gas diffusion layer comprises a fabric having a warp thread and a weft thread which are made of carbon fiber, and the distance X between adjacent intersections where said warp and weft threads cross each other and the thickness Y of said fabric satisfy the equation: 1.4≦X/Y≦3.5, the height A and the width B of said warp thread, and the height C and the width D of said weft thread respectively satisfy 0.2≦A/B≦0.4 and 0.1≦C/D≦0.4.