Patent ID: 7041408
Filing Date: 2006-05-09
Classification: H01M,Y02E,Y02T

Abstract:
1. A fuel cell stack comprising: a plurality of cooler plates; a plurality of fuel cells disposed in groups between successive ones of said cooler plates, there being a first pair of fuel cells in each group each of said first fuel cells being adjacent to a respective one of said cooler plates, there being one or more second fuel cells in each group remote from said cooler plates and contiguous with two other fuel cells, said first pair of fuel cells having hydrophilic, porous oxidant reactant gas flow field plates with channels of a first depth, said second fuel cells having hydrophilic, porous oxidant reactant gas flow field plates with channels which are deeper than said first depth, whereby to provide flow of oxidant gas in said second fuel cells to aid in the cooling thereof which is greater than the flow of oxidant reactant gas in said first fuel cells.