Patent ID: 7309539

Claim:
A fuel cell stack comprising: a cell assembly formed by stacking a plurality of fuel cells in a stacking direction, said fuel cells each including an electrolyte electrode assembly including a pair of electrodes and an electrolyte interposed between said electrodes, and separators for sandwiching said electrolyte electrode assembly; terminal plates provided outside opposite ends of said cell assembly in the stacking direction for collecting electricity from said fuel cell stack; and at least one electrically conductive heat insulation plate, said heat insulation plate interposed between one of said separators that is at an end of said cell assembly in the stacking direction and said terminal plate, said heat insulation plate directly contacting said one of said separators that is at said end of said cell assembly, wherein said heat insulation plate is a corrugated plate, and a heat insulation air chamber is defined between said heat insulation plate and said cell assembly, wherein said separators are corrugated metal plates.