Building radially oriented architecture by tailorable V2O5 nanoribbons toward enhanced lithium storage
Building radially oriented architecture by tailorable V2O5 nanoribbons toward enhanced lithium storage
复制标题
通过可定制的 V2O5 纳米带构建径向结构以增强锂存储
DOI：
10.1016/j.cej.2016.06.099
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发表时间：
2016-11-15
影响因子：
15.1
通讯作者：
Li, Chunzhong
中科院分区：
文献类型：
--
作者：
Jia, Guiqi;Deng, Zongnan;Li, Chunzhong
由一维纳米构建块组装而成的径向取向的金属氧化物层次化结构，由于其强烈的纳米结构工程耦合效应，是实现高性能锂离子电池的理想材料。在这里，我们展示了由可定制的纳米带V2O5亚基组成的三种此类结构的合成，以及它们沿侧面组装成卷曲的麦叶状形态。并对其形成过程进行了探讨。重要的是，所获得的分层结构具有高效的离子/电子传输和耐用的结构的优点。正如预测的那样，合成的样品作为LiBS的正极材料，具有高的初始比容量285mAhg，在10C时保持在157mAhg，而且在100次循环中，每循环仅有0.24%的容量损失。目前的工作强调了径向取向的金属氧化物分层结构在提高LIBS性能方面的重要性。(C)2016爱思唯尔B.V.保留所有权利。
Radially oriented metal oxide hierarchical architectures assembled by one-dimensional (1D) nanobuilding blocks are highly desirable for achieving high performance lithium-ion batteries (LIBs) due to their strong coupling effect of nanostructure engineering. Here, we demonstrate the synthesis of three kinds of such architectures composed of tailorable V2O5 subunits from nanoribbons and their assembly along the side to curled wheat-leaf-like morphology. The formation process has also been proposed. Importantly, the as-obtained hierarchical architectures have the advantages of efficient ions/electrons transport and durable structure. As predicted, the resultant sample, when served as cathode materials for LIBs, delivers a high initial specific capacity of 285 mAh/g, which is maintained 157 mAh/g at 10 C. Moreover, a satisfied cycle stability is also attained with just 0.24% capacity loss per cycle over 100 cycles. The present work highlights the importance of radially oriented metal oxide hierarchical architectures in enhancing LIBs performance. (C) 2016 Elsevier B.V. All rights reserved.