Metallic Sb nanoparticles embedded into a yolk–shell Sb2O3@TiO2 composite as anode materials for lithium ion batteries,New Journal of Chemistry

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Metallic Sb nanoparticles embedded into a yolk–shell Sb2O3@TiO2 composite as anode materials for lithium ion batteries
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020-07-15 , DOI: 10.1039/c9nj05947d
Qigang Han _{1,

2,

3,

4,

5} , Yalan Sheng _{1,

2,

3,

4,

5} , Zhiwu Han _{3,

4,

5,

6} , Xiang Li _{1,

2,

3,

4,

5} , Wenqiang Zhang _{1,

2,

3,

4,

5} , Yao Li _{1,

2,

3,

4,

5} , Xu Zhang _{1,

2,

3,

4,

5}

Affiliation

Metallic antimony is considered to be a promising anode material for lithium ion batteries (LIBs) due to its appropriate reaction potential. However, the rapid loss of capacity during the cycling process restricts its practical application. Hence, it is essential to research for a facile and effective approach for a new high-capacity antimony trioxide as an anode material for LIBs. In this study, we successfully synthesized an Sb₂O₃/Sb@TiO₂ composite, wherein the TiO₂ film was coated on the surface of Sb₂O₃ nanorods with the discontinuous distribution of elemental Sb particles in the TiO₂ film. The Sb₂O₃/Sb@TiO₂ composite exhibits superior rate and cycling performance. As an anode material, a specific discharge capacity of 609 mA h g⁻¹ can be released at a current density of 100 mA g⁻¹. The excellent electrochemical performance is based on Sb nanoparticles and one-dimensional Sb₂O₃ as the core to enhance the capacity, and TiO₂ is used as the outer shell to consolidate the interface between the electrolyte and the electrode material.

中文翻译：

嵌入卵黄壳Sb2O3 @ TiO2复合材料中的金属Sb纳米颗粒作为锂离子电池的负极材料

金属锑由于其适当的反应电位而被认为是锂离子电池（LIB）的有希望的负极材料。但是，循环过程中容量的快速损失限制了其实际应用。因此，有必要研究一种简便有效的方法来制备新型高容量三氧化二锑作为LIB的负极材料。在这项研究中，我们成功地合成了Sb ₂ O ₃ / Sb @ TiO ₂复合材料，其中TiO ₂膜被涂覆在Sb ₂ O ₃纳米棒的表面上，且元素Sb颗粒不连续地分布在TiO ₂膜中。锑₂ O ₃/ Sb @ TiO ₂复合材料表现出优异的速率和循环性能。作为负极材料，可以在100 mA g ^-1的电流密度下释放609 mA hg ^-1的比放电容量。优异的电化学性能是基于Sb纳米颗粒和一维Sb ₂ O ₃作为核心来增强容量，而TiO ₂被用作外壳以巩固电解质和电极材料之间的界面。

更新日期：2020-08-11

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