Hollow Multi-Shelled Structural TiO2-x with Multiple Spatial Confinement for Long-Life Lithium-Sulfur Batteries

被引：178
作者：
Salhabi, Esmail Husein M. [1 ,2 ]
Zhao, Jilu [1 ,2 ]
Wang, Jiangyan [1 ]
Yang, Mei [1 ,2 ]
Wang, Bao [1 ,2 ]
Wang, Dan [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, 1 North 2nd St, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2019年 / 58卷 / 27期
基金：
中国国家自然科学基金;
关键词：
hollow multi-shelled structures (HoMSs); Li-S batteries; polysulfides; titanium; ANATASE TIO2; PERFORMANCE; MICROSPHERES; POLYSULFIDE; COMPOSITES; ELECTRODE; CAPACITY; CATHODE; SPHERES; ANODES;
D O I：
10.1002/anie.201903295
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
TiO2-x with well-controlled hollow multi-shelled structures (HoMSs) were designed and synthesized, via a sequential templating approach (STA), to act as sulfur carrier materials. They were explored as physico-chemical encapsulation materials. Particularly, the sulfur cathode based on triple-shelled TiO2-x HoMSs delivered a specific capacity of 903 mAh g(-1) with a capacity retention of 79% at 0.5 C and a Coulombic efficiency of 97.5% over 1000 cycles. The outstanding electrochemical performance is attributed to better spatial confinement and integrated conductivity of the intact triple-shell that combine the features of physico-chemical adsorption, short charge transfer path along with mechanical strength.
引用
收藏
页码：9078 / 9082
页数：5
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