Process to recover performance of fuel cell catalysts
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United States of America Patent
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Apr 21, 2015
Grant Date -
Feb 21, 2013
app pub date -
Aug 16, 2011
filing date -
Aug 16, 2011
priority date (Note) -
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Abstract
Disclosed herein are processes for recovering performance of fuel cells by recovering fuel cell catalyst activity and methods of testing the durability and activity performance of fuel cells. One catalyst recovery process disclosed herein for a fuel cell having a membrane electrode assembly comprises operating the fuel cell for a first recovery cycle with fuel gas supplied to an anode of the fuel cell and an oxidant supplied to a cathode of the fuel cell while drawing a current from the fuel cell at steady state throughout the first recovery cycle, the first recovery cycle having a predetermined time period. The fuel cell has reached end of life due in part to intermittent use prior to operating the fuel cell for the first recovery cycle. A life of the fuel cell improves when the first recovery cycle is complete.
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