Hierarchical self-supported C@TiO2-MoS2 core-shell nanofiber mats as flexible anode for advanced lithium ion batteries
Hierarchical self-supported C@TiO2-MoS2 core-shell nanofiber mats as flexible anode for advanced lithium ion batteries
复制标题
分层自支撑C@TiO2-MoS2核壳纳米纤维垫作为先进锂离子电池的柔性阳极
DOI：
10.1016/j.apsusc.2017.06.129
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发表时间：
2017-11-30
影响因子：
6.7
通讯作者：
Zhang, Jun
中科院分区：
文献类型：
--
作者：
Wang, Zhaojie;Liu, Ming;Zhang, Jun
高功率密度、良好的循环性能、柔性和低成本是可穿戴设备用柔性锂离子电池的发展方向。在这里，我们报告了一个灵活的自支撑锂离子负极材料的合理设计和制造，它由薄的MoS 2纳米片生长在碳@TiO2核壳纳米纤维的表面。所得的分级三元纳米复合材料表现出高的可逆比容量（在100 mA g（-1）下类似于1460 mA h g（-1））、优异的循环性能（即使在1000次循环后也几乎没有容量损失）和倍率性能（在2 A g（-1）下为928 mA h g（-1））。此外，无粘合剂的阳极材料展示了柔性锂离子电池的新机会。这种上级的储锂性能是由目前设计良好的分层结构以及不同组分和众多界面的协同效应所决定的。(C)2017爱思唯尔B. V.保留所有权利。
The requirements of high power density, excellent cycling ability, flexibility and low cost, are of paramount importance and critical to develop flexible lithium ion batteries (LIBs) for wearable instruments. Here we reported the rational design and fabrication of a flexible self-supported lithium ion anode material, which consists of thin MoS2 nanosheets grown on the surfaces of carbon@TiO2 core-shell nanofibers. The resulting hierarchical ternary nanocomposites exhibited high reversible specific capacity (similar to 1460 mA h g(-1) at 100 mA g(-1)), excellent cyclability (little capacity loss even after 1000 cycles) and rate performance (928 mA h g(-1) at 2 A g(-1)) as anode in LIB. Furthermore, the binder-free anode material demonstrated new opportunities for flexible lithium ion batteries. The superior lithium storage performance is derived from the present well-designed hierarchical nanofiber structure and the synergic effect of different components and numerous interfaces. (C) 2017 Elsevier B.V. All rights reserved.