期刊
SOLID STATE IONICS
卷 181, 期 13-14, 页码 635-639出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2010.02.030
关键词
Spinel lithium titanate; Graphitized carbon nanotube; Rate capability; Conductive network; Lithium ion battery
资金
- Ministry of Science and Technology of the People's Republic of China [2006CB932703]
- Chinese Academy of Science [KJCX2-YW-M01]
A L14Ti5O12/graphitized carbon nanotubes (GCNTs) composite was prepared by using a solid-state method. The influence of GCNTs on the particle size, morphology and electrochemical performance of the Li4Ti5O12/GCNTs composite was investigated. The Li4Ti5O12/GCNTs composite exhibited high specific capacity and good rate capability. At 0.5C, its initial discharge capacity was 163 mAh/g, which is close to the theoretical capacity of Li4Ti5O12. Even at 10.0C, its initial discharge capacity could reach 143 mAh/g. The discharge capacity of the Li4Ti5O12/GCNTs composite after 100 cycles at 10.0C was 132 mAh/g, which is about 86% of its capacity after the same number of cycles at 1.0C (154 mAh/g). (C) 2010 Elsevier B.V. All rights reserved.
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