Patent ID: 8039163
Filing Date: 2011-10-18
Classification: H01M,Y02E

Abstract:
1. A separator for use with a fuel cell, and for being inserted between single cells thereof, each single cell having an electrolyte sandwiched between electrodes, in order to stack the single cells together, the separator comprising: gas diffusion portions which are arranged so as to cover a surface of the electrodes and in which are formed multiple diamond-shaped air holes for gas diffusion; and spacer portions which form parallel divided gas passages on the back side of portions of the gas diffusion portions which cover the surface of the electrodes, wherein the gas diffusion portions and the spacer portions are integrally formed by bending an expanded metal member to have a rectangular corrugated plate shaped cross-section; and wherein the distance between edges of adjacent air holes is equal to, or less than, 0.3 mm, and a dimension of the diamond-shaped air holes in a vertical direction is 0.5 mm and a dimension of the diamond-shaped air holes in a horizontal direction is 1.0 mm.