Patent ID: 7060383
Filing Date: 2006-06-13
Classification: H01M,Y02E

Abstract:
1. A fuel cell comprising: a membrane electrode assembly including an electrolyte and a pair of electrodes provided on respective sides of the electrolyte; and a first separator and a second separator sandwiching said membrane electrode assembly, wherein said first separator is provided with a first passage comprising a plurality of recesses formed on a first separator surface in contact with said membrane electrode assembly, said second separator is provided with a second passage comprising a plurality of recesses formed on a second separator surface in contact with said membrane electrode assembly, the recesses of said first separator are opposite, across said membrane electrode assembly, to the second separator surface in contact with said membrane electrode assembly, the recesses of said second separator are opposite, across said membrane electrode assembly, to the first separator surface in contact with said membrane electrode assembly, and a sum of the width of the recess constituting the first passage and an interval between the recesses constituting the first passage is different from a sum of the width of the recess constituting the second passage and an interval between the recesses constituting the second passage.