Synthesis and characterization of Li4Ti5O12/graphene composite as anode material with enhanced electrochemical performance
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- 作者：Qian Zhang (1)
Wenjie Peng (1)
Zhixing Wang (1)
Xinhai Li (1)
Xunhui Xiong (1)
Huajun Guo (1)
Zhiguo Wang (1)
Feixiang Wu (1) - 关键词：Anode materials ; Graphene ; Rate capability ; Lithium ; ion batteries
- 刊名：Ionics
- 出版年：2013
- 出版时间：May 2013
- 年：2013
- 卷：19
- 期：5
- 页码：717-723
- 全文大小：572KB
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Wenjie Peng (1)
Zhixing Wang (1)
Xinhai Li (1)
Xunhui Xiong (1)
Huajun Guo (1)
Zhiguo Wang (1)
Feixiang Wu (1)
1. School of Metallurgical Science and Engineering, Central South University, Changsha, 410083, People鈥檚 Republic of China - ISSN：1862-0760
文摘
The use of graphene as a conductive additive to enhance the rate capability and cycle stability of Li4Ti5O12 electrode material has been demonstrated. Li4Ti5O12 and its composite with graphene (1.86聽wt%) are prepared by ball milling and simple chemical method, respectively. Among the as-synthesized composites, Li4Ti5O12 particles uniformly clung to the graphene sheets. When used as an electrode material for lithium ion battery, the composite presents excellent rate performance and high cyclic stability. It is found that the composite displayed high-rate capacity of 118.7聽mAh鈥塯鈭? at 20聽C. Furthermore, the composite exhibits good cycle stability, retaining over 96聽% of its initial capacity after 50聽cycles at 10聽C. The excellent electrochemical performance is attributed to a decrease in the charge-transfer resistance.