期刊
CHINESE PHYSICS B
卷 20, 期 11, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/20/11/118202
关键词
Li4Ti5O12; current collector; electron transfer; Li-ion batteries
资金
- Chinese Academy of Sciences [KJCX2-YW-W26]
- National High Technology Research and Development Program of China [2009AA033101]
- National Basic Research Program of China [2007CB936500, 2010CB833102]
- National Natural Science Foundation of China [50972164]
- Science and Technology Planning Project of Guangdong Province, China [2010A090602001]
The rate and cycling performances of the electrode materials are affected by many factors in a practical complicated electrode process. Learning about the limiting step in a practical electrochemical reaction is very important to effectively improve the electrochemical performances of the electrode materials. Li4Ti5O12, as a zero-strain material, has been considered as a promising anode material for long life Li-ion batteries. In this study, our results show that the Li4Ti5O12 pasted on Cu or graphite felt current collector exhibits unexpectedly higher rate performance than on Al current collector. For Li4Ti5O12, the electron transfer between current collector and active material is the critical factor that affects its rate and cycling performances.
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