Significant effect of electron transfer between current collector and active material on high rate performance of Li4Ti5O12

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...

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Bibliographic Details
Published inChinese physics B Vol. 20; no. 11; pp. 9 - 12
Main Author 潘慧霖 胡勇胜 李泓 陈立泉
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.11.2011
Subjects
Li4Ti5O12
活性物质
电化学性能
电子转移
电极材料
能效
转移率
集热器
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Summary: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 A1 current collector. For Li4Ti5O12, the electron transfer between current collector and active material is the critical factor that affects its rate and cycling performances.
Bibliography: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 A1 current collector. For Li4Ti5O12, the electron transfer between current collector and active material is the critical factor that affects its rate and cycling performances.
Li4Ti5O12; current collector; electron transfer; Li-ion batteries
11-5639/O4
Pan Hui-Lin,Hu Yong-Sheng,Li Hong,Chen Li-Quan（Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China）
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/11/118202