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	Preparation and characterization of spherical La-doped Li4Ti5O12 anode material for lithium ion batteries
	Gao, Jian ; Ying, Jierong ; Jiang, Changyin ; Wan, Chunrong
	2010-10-12 ; 2010-10-12 ; OCT
关键词	Li ion batteries Li4Ti5O12 High density Spherical Doping STRAIN INSERTION MATERIAL ELECTROCHEMICAL PROPERTIES RATE CAPABILITY ELECTRODE CELLS INTERCALATION PERFORMANCE TITANATE SPINEL Chemistry, Physical Electrochemistry Physics, Condensed Matter
中文摘要	The lithium secondary batteries with high power density need the electrode materials with both high specific capacity and high tap density. An "outer gel" method by TiCl4 as the raw material has been developed to prepare spherical precursor. High tap density spherical Li4Ti5O12 is synthesized by sintering the mixture of precursor and Li2CO3. La-doped Li4Ti5O12 is also prepared by this method. X-ray diffraction, scanning electron microscopy, energy-dispersive spectrometry, tap density testing, and the determination of the electrochemical properties show that the Li4Ti5O12 powders prepared by this method are spherical and exhibits high tap density. La3+ dopant improved the electrochemical performance over the pristine Li4Ti5O12. It is tested that the tap density of the pristine and La3+-doped products is as high as 1.80 and 1.78 gaEuro cent cm(-3), respectively. Between 1.0 and 3.0 V versus Li, the initial discharge capacity of the La3+ dopant is as high as 161.5 mAhaEuro cent g(-1) at 0.1C rate. After 50 cycles, the reversible capacity is still 135.4 mAhaEuro cent g(-1).
语种	英语 ; 英语
出版者	SPRINGER HEIDELBERG ; HEIDELBERG ; TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79341]
专题	清华大学
推荐引用方式 GB/T 7714	Gao, Jian,Ying, Jierong,Jiang, Changyin,et al. Preparation and characterization of spherical La-doped Li4Ti5O12 anode material for lithium ion batteries[J],2010, 2010, OCT.
APA	Gao, Jian,Ying, Jierong,Jiang, Changyin,&Wan, Chunrong.(2010).Preparation and characterization of spherical La-doped Li4Ti5O12 anode material for lithium ion batteries..
MLA	Gao, Jian,et al."Preparation and characterization of spherical La-doped Li4Ti5O12 anode material for lithium ion batteries".(2010).

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