CPC B01J 23/42 (2013.01) [H01M 4/8657 (2013.01); H01M 4/92 (2013.01); H01M 8/1004 (2013.01); H01M 8/1009 (2013.01); H01M 8/1032 (2013.01); H01M 8/1053 (2013.01); H01M 8/1067 (2013.01)] | 20 Claims |
1. An oxygen reduction reaction (ORR) catalyst comprising:
a metal catalyst; and
a protonated dimeric ionic liquid contacting the metal catalyst, the protonated dimeric ionic liquid comprising 9′9′-(butane-1,4-diyl)bis(3,4,6,7,8,9-hexahydro-2H-pyrimido[1,2-a]pyrimidin-1-ium) 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate.
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