Graphene-encapsulated Si on ultrathin-graphite foam as anode for high capacity lithium-ion batteries.

Ji, Junyi; Ji, Hengxing; Zhang, Li Li; Zhao, Xin; Bai, Xin; Fan, Xiaobin; Zhang, Fengbao; Ruoff, Rodney S · Adv Mater · 2013

basic_science · Level V

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Abstract

A Si/graphene composite is drop-casted on an ultrathin-graphite foam (UGF) with three dimensional conductive network. The Si/graphene/UGF composite presents excellent stability and relatively high overall capacity when tested as an anode for rechargeable lithium ion batteries.