Fuel cell and fuel cell stack
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United States of America Patent
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-
Apr 14, 2009
Grant Date -
Jun 30, 2005
app pub date -
Dec 23, 2004
filing date -
Dec 26, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fuel cell includes an electrolyte electrode assembly and a pair of separators sandwiching the electrolyte electrode assembly. Each of the separators is a single plate, and includes a plurality of trapezoidal portions. First protrusions and second protrusions are provided on both surfaces of the trapezoidal portion. The first protrusions contact the anode of the electrolyte electrode assembly, and the second protrusions contact the cathode of the electrolyte electrode assembly. A fuel gas inlet for supplying a fuel gas into a fuel gas flow field is formed on the trapezoidal portion. The fuel gas inlet is provided at an upstream position away from an intermediate position of the electrolyte electrode assembly in a flow direction of an oxygen-containing gas.
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