Proton exchange membrane (PEM) electrochemical cell having an integral electrically-conductive, resiliently compressible, porous pad
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United States of America Patent
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Apr 27, 2010
Grant Date -
Jun 18, 2009
app pub date -
Oct 20, 2008
filing date -
Apr 5, 2001
priority date (Note) -
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Abstract
. Cell frames are placed in peripheral contact with the metal screen and the compression pad for peripherally containing fluids present therewithin. Electrically-conductive separators are placed in contact with the metal screen and the compression pad for axially containing fluids present therewithin. A plurality of the cells may be arranged in series in a bipolar configuration without requiring a separate compression pad between cells (for gas pressure differentials up to about 400 psi or greater). The invention is also directed to a fuel cell wherein the pad replaces the carbon fiber paper or carbon fiber cloth in contact with the cathode or anode.
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