VOLTAGE REVERSAL TOLERANT FUEL CELL WITH SELECTIVELY CONDUCTING ANODE
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United States of America Patent
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Issued Date -
Jan 30, 2014
app pub date -
Jul 24, 2013
filing date -
Jul 27, 2012
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Abstract
Use of a selectively conducting anode component in solid polymer electrolyte fuel cells can reduce the degradation associated with repeated startup and shutdown, but unfortunately can also adversely affect a cell's tolerance to voltage reversal. Use of a carbon sublayer in such cells can improve the tolerance to voltage reversal, but can adversely affect cell performance. However, employing an appropriate selection of selectively conducting material and carbon sublayer, in which the carbon sublayer is in contact with the side of the anode opposite the solid polymer electrolyte, can provide for cells that exhibit acceptable behaviour in every regard. A suitable selectively conducting material comprises platinum deposited on tin oxide.
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