Fuel cell stack
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United States of America Patent
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-
Feb 3, 2004
Grant Date -
Jun 12, 2003
app pub date -
Dec 6, 2001
filing date -
Dec 11, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A fuel cell stack comprises fuel cell basic units, each of which including a gas diffuser/collector plate serving as an anode, an ion exchange membrane, disposed on top of the gas diffuser/collector plate and an air diffuser/collector plate serving as a cathode and disposed on top of the ion exchange membrane. The gas diffuser/collector has a face directed to the ion exchange membrane. This face is provided with a flow field incorporating a multiplicity of adjacent open-faced flow channels. Each open-faced flow channel has a cross-section continuously diminishing from its inlet to its outlet. The flow field, viewed from the top, forms a trapezoidal contour.
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