Synthesis of nanosheets-assembled lithium titanate hollow microspheres and their application to lithium ion battery anodes

被引：24
作者：
Zhou, Qian [1 ]
Liu, Li [1 ]
Guo, Haipeng [1 ]
Xu, Rong [1 ]
Tan, Jinli [1 ]
Yan, Zichao [1 ]
Huang, Zhifeng [1 ]
Shu, Hongbo [1 ]
Yang, Xiukang [1 ]
Wang, Xianyou [1 ]
机构：
[1] Xiangtan Univ, Sch Chem, Minist Educ, Key Lab Environm Friendly Chem & Applicat, Xiangtan 411105, Hunan, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2015年 / 151卷
基金：
中国国家自然科学基金; 国家教育部博士点专项基金资助;
关键词：
Lithium ion battery; Lithium titanate; Nanosheets; Hollow microspheres; X-RAY REFLECTOMETRY; ELECTRODE/ELECTROLYTE INTERFACE; ELECTROCHEMICAL PERFORMANCE; LI4TI5O12; ANODE; RATE-CAPABILITY; LONG-LIFE; NANOSTRUCTURES; SPHERES;
D O I：
10.1016/j.electacta.2014.11.087
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Hierarchical assembly of hollow microstructures is of great scientificity and practical value. In this paper, a hydrothermal synthesis of Li4Ti5O12 hollow microspheres assembled by nanosheets is introduced. Transmission electron microscopy (TEM) image shows that such Li4Ti5O12 microspheres, with sizes of 2 mm in diameter, are composed of a hollow inner cavity and thin outer shell assembled by nanosheets. A possible growth mechanism of the structure is further expounded. The Li4Ti5O12 hollow microspheres calcinated at 700 degrees C display extremely good electrochemical performance, including high capacity (147.3 mA h g(-1) at 3 C), excellent cyclic stability (95.0% capacity retention after 100 cycles at 3 C) and remarkable rate capability (131.3 mA h g(-1) at 20 C). (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：502 / 509
页数：8
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