Self-Assembled Hierarchical MoO2/Graphene Nanoarchitectures and Their Application as a High-Performance Anode Material for Lithium-Ion Batteries
Self-Assembled Hierarchical MoO2/Graphene Nanoarchitectures and Their Application as a High-Performance Anode Material for Lithium-Ion Batteries
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DOI：
10.1021/nn201802c
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发表时间：
2011-09-01
期刊：
影响因子：
17.1
通讯作者：
Huang, Yunhui
中科院分区：
文献类型：
--
作者：
Sun, Yongming;Hu, Xianluo;Huang, Yunhui
通过简单的液相工艺和随后的Moprecursor/石墨烯复合材料的还原，大规模地制备了自组装分层MoO2/石墨烯纳米结构。作为锂离子电池负极材料，形成的MoO2/石墨烯纳米杂化材料不仅具有高可逆容量，而且具有优异的循环性能和良好的倍率性能。结果表明，由初生MoO2纳米晶体制成的分层棒被均匀地包裹在石墨烯片内。层次化纳米结构和导电石墨烯载体的协同效应可能有助于提高MoO2/石墨烯杂化电极的电化学性能。这项工作提出了一种简便的综合战略，对扩大工业生产具有潜在的竞争力。此外，具有良好定义的分层拓扑结构的MoO2/石墨烯杂化材料不仅为先进的功能器件提供了灵活的构建模块，而且也是研究其纳米结构相关性能在催化和电子应用中的理想候选者。
Self-assembled hierarchical MoO2/graphene nanoarchitectures have been fabricated on a large scale through a facile solution-phase process and subsequent reduction of the Moprecursor/graphene composite. The as-formed MoO2/graphene nanohybrid as an anode material for lithium-ion batteries exhibits not only a highly reversible capacity but also an excellent cycling performance as well as good rate capability. Results show that the hierarchical rods made of primary MoO2 nanocrystals are uniformly encapsulated within the graphene sheets. The synergistic effect of the hierarchical nanoarchitecture and the conducting graphene support may contribute to the enhanced electrochemical performances of the hybrid MoO2/graphene electrode. This work presents a facile synthetic strategy that is potentially competitive for scaling-up industrial production.. Besides, the MoO2/graphene hybrids with a well-defined hierarchical topology not only provide flexible building blocks for advanced functional devices, but are also ideal candidates for studying their nanoarchitecture-dependent performances In catalytic and electronic applications.