材料科学
石墨烯
化学工程
阳极
锂(药物)
纳米颗粒
电化学
法拉第效率
锂离子电池
氧化物
碳纤维
复合数
石墨
纳米技术
电极
作者
Danfeng Qiu,Luyao Ma,Mingbo Zheng,Zixia Lin,Bin Zhao,Zhe Wen,Zibo Hu,Lin Pu,Yi Shi
标识
DOI:10.1016/j.matlet.2012.06.045
摘要
Abstract A MnO nanoparticle/graphene composite was prepared via in situ carbothermal reduction of Mn3O4 on the surface of graphene nanosheets. The formed MnO nanoparticles with diameters ranging from 20 nm to 250 nm integrated tightly with the graphene nanosheets. As anode material for lithium-ion batteries, the nanocomposite showed a high specific capacity of approximately 700 mA h g−1 at 100 mA g−1, excellent cyclic stability, and good rate capability. During the charge-discharge process, graphene nanosheets served as a three-dimensional conductive network for MnO nanoparticles. Furthermore, the detachment and agglomeration of MnO nanoparticles were effectively prevented due to the tight combination of MnO nanoparticles and graphene.
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