Patent ID: 8227130
Filing Date: 2012-07-24
Classification: H01M,Y02E

Abstract:
1. A fuel cell comprising: a membrane-electrode assembly having an electrical generation section that includes an anode, an electrolyte, and a cathode; a porous-body flow passage disposed on at least one of an anode surface and a cathode surface of the membrane-electrode assembly; and a separator disposed on the opposite side of the porous-body flow passage from the electrical generation section; wherein the porous-body flow passage is made of metal and includes a high porosity region having a higher porosity than an average porosity thereof and a low porosity region having a lower porosity than the average porosity thereof, the high porosity region extends in the direction from a gas supply hole formed in the separator to a gas discharge hole formed in the separator to communicate with a gas discharge-side manifold via the low porosity region, and the low porosity region extends into the high porosity region of the porous-body flow passage.