CPC C25D 17/10 (2013.01) [C25D 13/02 (2013.01); H01G 11/32 (2013.01); H01G 11/40 (2013.01); H01M 4/0457 (2013.01); H01M 4/583 (2013.01); H01M 2004/021 (2013.01)] | 11 Claims |
1. A hybrid electrode comprising:
a substrate comprising carbon fibers; and
graphene sheets vertically stacked on and electrically connected to the carbon fibers,
wherein the hybrid electrode has about 100% capacitance retention after at least 100,000 cycles.
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