Reduced graphene oxide-supported TiO2 fiber bundles with mesostructures as anode materials for lithium-ion batteries.
Reduced graphene oxide-supported TiO2 fiber bundles with mesostructures as anode materials for lithium-ion batteries.
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DOI：
10.1002/chem.201502352
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发表时间：
2015-10
期刊：
影响因子：
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通讯作者：
Mengmeng Zhen;Xiaohe Zhu;Xiao Zhang;Zhen Zhou;Lu Liu
中科院分区：
文献类型：
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作者：
Mengmeng Zhen;Xiaohe Zhu;Xiao Zhang;Zhen Zhou;Lu Liu
虽然介孔材料的合成已经很成熟，但在RGO纳米片上制备具有介孔结构、高度结晶壁和良好热稳定性的TiO 2纤维束仍然是一个挑战。在此，使用低成本和环境友好的水热路线用于合成具有致密介观结构的RGO纳米片支撑的TiO 2纤维束。这些介观结构的TiO 2-RGO材料用于研究Li离子插入性能，其在1000次循环后在200 mA g（-1）下显示出235 mA h g（-1）的可逆容量和在1000 mA g（-1）下显示出150 mA h g（-1）的可逆容量。新型介观结构和高导电基底（RGO纳米片）的较高比表面积导致TiO 2-RGO复合材料的优异的锂存储性能、高倍率性能和强循环稳定性。
Although the synthesis of mesoporous materials is well established, the preparation of TiO2 fiber bundles with mesostructures, highly crystalline walls, and good thermal stability on the RGO nanosheets remains a challenge. Herein, a low-cost and environmentally friendly hydrothermal route for the synthesis of RGO nanosheet-supported anatase TiO2 fiber bundles with dense mesostructures is used. These mesostructured TiO2 -RGO materials are used for investigation of Li-ion insertion properties, which show a reversible capacity of 235 mA h g(-1) at 200 mA g(-1) and 150 mA h g(-1) at 1000 mA g(-1) after 1000 cycles. The higher specific surface area of the new mesostructures and high conductive substrate (RGO nanosheets) result in excellent lithium storage performance, high-rate performance, and strong cycling stability of the TiO2 -RGO composites.