Enhanced performance of spherical natural graphite coated by Li4Ti5O12 as anode for lithium-ion batteries

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	Enhanced performance of spherical natural graphite coated by Li4Ti5O12 as anode for lithium-ion batteries
	Lu, Mi ; Tian, Yanyan ; Zheng, Xiaodong ; Gao, Jun ; Huang, Bing ; Tian YY(田艳艳) ; Gao J(高俊)
刊名	http://dx.doi.org/10.1016/j.jpowsour.2012.07.044
	2012-12-01
关键词	ELECTRODE SPINEL
英文摘要	National Natural Science Foundation of China [20903014]; Doctoral Fund of Shandong Province [BS2010CL001]; Binzhou University [2008Y01, 2008ZDL04]; The natural graphite (NG) is coated with Li4Ti5O12 (LTO) and the composite shows a markedly enhanced rate performance due to the decrease of charge transfer resistance after LTO coating. The specific capacity of the NG charge-discharged at 2 C is increased by 60.3% (128.7 vs. 80.3 mAh g(-1)) by coating it with 1 wt.% of Li4Ti5O12 (LTO). The comparison of the NG and that coated with 1 wt.% LTO at 0.1 C shows that the initial reversible capacity is increased from 318.1 mAh g(-1) to 357.5 mAh g(-1) after coating, while the total irreversible capacity loss after 50 cycles is decreased from 122.8 mAh g(-1), to 103.9 mAh g(-1). The composite improves the energy and power densities, safety, cycle life and lowers the price of the lithium-ion battery while avoiding the gas-swelling of full battery caused by Ti4+ because the final coating material is the lithiated LTO (Li7Ti5O12 or Li9Ti5O12). (C) 2012 Elsevier B.V. All rights reserved.
语种	英语
出版者	J POWER SOURCES
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/88356]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Lu, Mi,Tian, Yanyan,Zheng, Xiaodong,et al. Enhanced performance of spherical natural graphite coated by Li4Ti5O12 as anode for lithium-ion batteries[J]. http://dx.doi.org/10.1016/j.jpowsour.2012.07.044,2012.
APA	Lu, Mi.,Tian, Yanyan.,Zheng, Xiaodong.,Gao, Jun.,Huang, Bing.,...&高俊.(2012).Enhanced performance of spherical natural graphite coated by Li4Ti5O12 as anode for lithium-ion batteries.http://dx.doi.org/10.1016/j.jpowsour.2012.07.044.
MLA	Lu, Mi,et al."Enhanced performance of spherical natural graphite coated by Li4Ti5O12 as anode for lithium-ion batteries".http://dx.doi.org/10.1016/j.jpowsour.2012.07.044 (2012).