Li4Ti5O12/graphene nanostructure for lithium storage with high-rate performance

被引：31
作者：
Ri, Song Gyun [1 ]
Zhan, Liang [2 ]
Wang, Yun [2 ]
Zhou, Lihui [1 ]
Hu, Jun [1 ]
Liu, Honglai [1 ]
机构：
[1] E China Univ Sci & Technol, Dept Chem, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
[2] E China Univ Sci & Technol, Dept Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2013年 / 109卷
基金：
中国国家自然科学基金;
关键词：
Lithium titanate; Graphene; Ionic liquid; Anode materials; Lithium ion battery; CARBON-COATED LI4TI5O12; RATE ELECTRODE MATERIAL; ANODE MATERIALS; ELECTROCHEMICAL PERFORMANCE; ENERGY-STORAGE; ION; GRAPHENE; COMPOSITE; BATTERIES; SHEETS;
D O I：
10.1016/j.electacta.2013.07.059
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Nano-crystalline Li4Ti5O12 with an average size of 18 nm was in situ grown on graphene sheets using ionic liquid of C12H23ClN2 [Omirn]Cl as the exfoliated agent. Such unique nanostructure provides a high electrode/electrolyte area for the electron transport and the nanosized Li4Ti5O12 leads to a short path for the lithium ion transfer. When used as an anode material for lithium-ion battery, the Li4Ti5O12/graphene nanostructure exhibits excellent reversibility (159 mAh g(-1) at 0.5 C after 100 cycles) and high-rate performance (162 mAhg(-1) at 0.2 C, 148.5 mAhg(-1) at 20 C). Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：389 / 394
页数：6
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