Ionic Liquid‐Assisted Synthesis of TiO2–Carbon Hybrid Nanostructures for Lithium‐Ion Batteries
Ionic Liquid‐Assisted Synthesis of TiO2–Carbon Hybrid Nanostructures for Lithium‐Ion Batteries
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DOI：
10.1002/adfm.201504134
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发表时间：
2016-03
影响因子：
19
通讯作者：
Yanhua Cheng;Zhengu Chen;Haobin Wu;Meifang Zhu;Yunfeng Lu
中科院分区：
文献类型：
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作者：
Yanhua Cheng;Zhengu Chen;Haobin Wu;Meifang Zhu;Yunfeng Lu
构建基于纳米碳材料（如碳纳米管和石墨烯纳米片）和金属氧化物纳米颗粒的纳米复合结构对于电化学能量存储具有极大的兴趣。在这里，提出了一种离子液体辅助的策略，以介导在碳纳米管和石墨烯上原位生长具有可控尺寸的TiO 2纳米晶体，并且还减少了改性的碳载体，同时恢复了石墨结构。所制备的纳米复合材料表现出高度多孔和坚固的结构，具有TiO2纳米晶体和碳载体之间的紧密耦合，这提供了容易的离子和电子传输途径以及高机械稳定性。当作为锂离子电池的电极材料进行评估时，纳米复合材料表现出高比容量，长循环寿命和优异的倍率性能，显示出其在高性能储能装置中的应用前景。
Building nanocomposite architectures based on nanocarbon materials (such as carbon nanotubes and graphene nanosheets) and metal‐oxide nanoparticles is of great interests for electrochemical energy storage. Here, an ionic‐liquid‐assisted strategy is presented to mediate the in situ growth of TiO2 nanocrystals with controlled size on carbon nanotubes and graphene, and also reduce the modified carbon supports to recover the graphitic structure simultaneously. The as‐prepared nanocomposites exhibit a highly porous and robust structure with intimate coupling between TiO2 nanocrystals and carbon supports, which offers facile ion and electron transport pathway as well as high mechanical stability. When evaluated as electrode materials for lithium‐ion batteries, the nanocomposites manifest high specific capacity, long cycling lifetime, and excellent rate capability, showing their promising application in high‐performance energy storage devices.