Regenerative fuel cell with catholyte comprising a polyoxometalate and a vanadium (IV)-compound
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United States of America Patent
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Jun 7, 2016
Grant Date -
Jan 2, 2014
app pub date -
Dec 16, 2011
filing date -
Dec 23, 2010
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Abstract
This invention provides a redox fuel cell comprising an anode and a cathode separated by an ion selective polymer electrolyte membrane; means for supplying a fuel to the anode region of the cell; means for supplying an oxidant to the cathode region of the cell; means for providing an electrical circuit between the anode and the cathode; a non-volatile catholyte solution flowing fluid communication with the cathode, the catholyte solution comprising a polyoxometallate redox couple being at least partially reduced at the cathode in operation of the cell, and at least partially re-generated by reaction with the oxidant after such reduction at the cathode, the catholyte solution comprising at least about 0.075M of the said polyoxometallate, and a vanadium (IV) compound.
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