Electrostatic green self-assembly of SiO2/graphene hybrid as anode materials for Li-ion batteries
SiO2/graphene composite was synthesized by a facile electrostatic self-assembly method followed by thermal reduction.SiO2 nanospheres with diameter of 320-340 nm were uniformly distributed on the surface of graphene.Graphene plays a key role to capture and distribute SiO2 nanospheres,thus SiO2/graphene composite has a good thermal stability up to 700 ℃.As anode material for Li-ion batteries(LIBs),SiO2/graphene composite delivered a much higher discharge capacity of 393 mAh·g1 than that of pure SiO2 after 270 cycles at the current density of 100 mA·g1,exhibiting favorable reversible capacity and improved cycling stability.This strategy can be extended to the assembly of other nanoparticles and graphene sheets for energy storage,sensing and catalysis.
electrostatic self-assembly SiO2 / graphene composite electrochemical performance anode Li-ion battery
Linghong Yin Zhongtao Li Wenting Wu Peng Li Mingbo Wu
State Key Laboratory of Heavy Oil Processing,School of Chemical Engineering,China University of Petroleum,Qingdao 266580,China
国内会议
长沙
英文
1-1
2015-11-05（万方平台首次上网日期，不代表论文的发表时间）