CPC H01M 4/364 (2013.01) [H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] | 46 Claims |
1. A porous silicon-containing composite comprising:
a porous core comprising a porous silicon composite secondary particle; and
a shell on at least one surface of the porous core, the shell comprising a first graphene,
wherein the porous silicon composite secondary particle comprises an aggregate of
a first primary particle comprising silicon,
a second primary particle comprising a structure, and
a second graphene on at least one surface of the first primary particle and the second-primary particle,
wherein at least one of a shape and a degree of oxidation of the first primary particle and the second primary particle are different,
wherein the second graphene has about 1 to about 30 layers, and is disposed on the first primary particle, and
the second graphene has about 1 to about 5 layers, and is disposed on the second primary particle, and
wherein the second graphene disposed on the second primary particle is in a form of flakes and the first graphene is disposed on the second graphene.
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