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

doi:10.1088/1674-1056/20/11/118202

Abstract 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.

Keywords: Li₄Ti₅O₁₂ current collector electron transfer Li-ion batteries

Received: 25 September 2011
Revised: 08 October 2011
Accepted manuscript online:

PACS:	82.47.Aa	(Lithium-ion batteries)
	73.40.-c	(Electronic transport in interface structures)
	77.84.Cg	(PZT ceramics and other titanates)

Cite this article:

Pan Hui-Lin (潘慧霖), Hu Yong-Sheng (胡勇胜), Li Hong (李泓), Chen Li-Quan (陈立泉) Significant effect of electron transfer between current collector and active material on high rate performance of Li₄Ti₅O₁₂ 2011 Chin. Phys. B 20 118202

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

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