Flexible SnS nanobelts: Facile synthesis, formation mechanism and application in Li-ion batteries

被引：137

作者：

Lu, Jun ^{[1
,2
]}

Nan, Caiyun ^{[1
,2
]}

Li, Lihong ^{[1
,2
]}

Peng, Qing ^{[1
,2
]}

Li, Yadong ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[2] Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China

来源：

NANO RESEARCH | 2013年 / 6卷 / 01期

基金：

中国国家自然科学基金;

关键词：

tin sulfide; nanobelts; Li-ion battery; morphology preservation; TEMPLATE-FREE SYNTHESIS; ANODE MATERIAL; HYDROTHERMAL SYNTHESIS; LITHIUM; NANOWIRES; SNO2; NANOSTRUCTURES; NANOTUBES; PRESSURE; CAPACITY;

D O I：

10.1007/s12274-012-0281-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

[020]-oriented tin sulfide nanobelts with a length/thickness ratio of 100 have been synthesized by a facile hydrothermal method without any surfactants, and the nanobelts have shown good strain-accommodating properties as well as good electrochemical performance as the anode for Li-ion batteries. The formation of the nanobelts results from a precipitation-dissolution-transformation mechanism, and the [020] oriented growth can be ascribed to the {010} facet family having the lowest atomic density. In particular, SnS shows clear Li-Sn alloying/de-alloying reversible reactions in the potential range 0.1-1.0 V. Based on galvanostatic measurements and electrochemical impedance spectroscopy, SnS nanobelts have shown impressive rate performance. The post-cycled SnS nanobelts were completely transformed into metallic tin, and preserved the one-dimensional structure due to their flexibility which accommodates the large volumetric expansion.

引用

页码：55 / 64

页数：10

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