Size-Dependent Electrochemical Magnesium Storage Performance of Spinel Lithium Titanate

doi:10.1002/asia.201402286

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	Size-Dependent Electrochemical Magnesium Storage Performance of Spinel Lithium Titanate
	Wu, Na; Yin, Ya-Xia; Guo, Yu-Guo
刊名	CHEMISTRY-AN ASIAN JOURNAL
	2014-08-01
卷号	9 期号:8 页码:2099-2102
关键词	Batteries Electrochemistry Magnesium Storage Nanoparticles Size Effect
ISSN号	1861-4728
DOI	10.1002/asia.201402286
英文摘要	Li4Ti5O12 nanoparticles (LTO NPs) with different particle sizes were synthesized by a simple sol-gel progress. The effect of LTO particle size on the electrochemical behavior in Mg secondary batteries was investigated. Results showed that magnesium storage behaviors in LTO are strongly size dependent. The Mg2+ electrochemical insertion into LTO becomes notable only when the particle size is below 40 nm. Moreover, the theoretical maximum capacity of LTO can be reached in crystallite sizes less than 10 nm. LTO NPs with 7-8 nm in size exhibited a substantial reversible capacity of 175 mAhg (1) and outstanding cycling stability, maintaining 95% capacity retention after 500 cycles. This result indicates that the LTO NPs with average particle size of 7-8 nm have high potential for use in high-rate and durable Mg secondary batteries. These results provide insight into how confining particles to nanosize will be critical to the preparation of suitable electrode materials for Mg secondary batteries.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000342675900019
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/51927]
专题	中国科学院化学研究所
通讯作者	Guo, Yu-Guo
作者单位	Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wu, Na,Yin, Ya-Xia,Guo, Yu-Guo. Size-Dependent Electrochemical Magnesium Storage Performance of Spinel Lithium Titanate[J]. CHEMISTRY-AN ASIAN JOURNAL,2014,9(8):2099-2102.
APA	Wu, Na,Yin, Ya-Xia,&Guo, Yu-Guo.(2014).Size-Dependent Electrochemical Magnesium Storage Performance of Spinel Lithium Titanate.CHEMISTRY-AN ASIAN JOURNAL,9(8),2099-2102.
MLA	Wu, Na,et al."Size-Dependent Electrochemical Magnesium Storage Performance of Spinel Lithium Titanate".CHEMISTRY-AN ASIAN JOURNAL 9.8(2014):2099-2102.