A Size-Dependent Sodium Storage Mechanism in L(i)4Ti(5)O(12) Investigated by,a Novel Characterization Technique Combining in Situ X-ray Diffraction and Chemical Sodiation

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	A Size-Dependent Sodium Storage Mechanism in L(i)4Ti(5)O(12) Investigated by,a Novel Characterization Technique Combining in Situ X-ray Diffraction and Chemical Sodiation
	Yu, XQ ; Pan, HL ; Wan, W ; Ma, C ; Bai, JM ; Meng, QP ; Ehrlich, SN ; Hu, YS ; Yang, XQ
刊名	NANO LETTERS
	2013
卷号	13 期号:10 页码:4721
关键词	Sodium-ion batteries Li4Ti5O12 in situ X-ray diffraction size effect chemical sodiation
ISSN号	1530-6984
通讯作者	Hu, YS (reprint author), Chinese Acad Sci, Beijing Key Lab New Energy Mat & Devices, Natl Lab Condensed Matter Phys, Key Lab Renewable Energy,Inst Phys, Beijing 100190, Peoples R China.
中文摘要	A novel characterization technique using the combination of chemical soaiation and synchrotron based in situ X-ray diffraction (XRD) has been detailed illustrated. The power of this novel technique was demonstrated in elucidating the structure evolution of Li4Ti5O12 upon sodium insertion. The sodium insertion behavior iato Li4Ti5O12 is strongly size dependent. A solid solution;reac don behavior in a wide range has been revealed during sodium insertion into the nanosized Li4Ti5O12 ram), which : is quite different from the, wellknown two-phase reaction, Li4Ti5O12/Li7Ti5O12 system during lithium insertion, and also has not been fully addressed in the literature so far. On the basis of this in situ experiment, the apparent Na+ ion diffusion coefficient (DNa+) of Li4Ti5O12 was estimated in the magnitude of 10-16 cm(2) s(-1), close to the:values estimated by electrochemical method, but 5 order of magnitudes smaller than the Li+ ion diffusion coefficient (DLi+ similar to 10(-11) cm(2) indicating a sluggish Na+ ion diffusion kinetics in Li4Ti5O12 comparing with that of Li ion. Nanosizing the Li4Ti5O12 will be critical to make it a suitable anode material for sodium-ion batteries. The application ofiithis novel in situ chemical sodiation method reported in this work provides a facile way and a new opportunity for in situ structure investigations of various sodium-ion battery materials and other systems.
资助信息	U.S. Department of Energy; Assistant Secretary for Energy Efficiency and Renewable Energy; Office of Vehicle Technologies [DEACO2-98CH10886]; "863" Project [2011AA11A235]; "973" Projects [2010CB833102, 2009CB220104]; NSFC [51222210, 11234013]; China Scholarship Council (CSC)
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/56748]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Yu, XQ,Pan, HL,Wan, W,et al. A Size-Dependent Sodium Storage Mechanism in L(i)4Ti(5)O(12) Investigated by,a Novel Characterization Technique Combining in Situ X-ray Diffraction and Chemical Sodiation[J]. NANO LETTERS,2013,13(10):4721.
APA	Yu, XQ.,Pan, HL.,Wan, W.,Ma, C.,Bai, JM.,...&Yang, XQ.(2013).A Size-Dependent Sodium Storage Mechanism in L(i)4Ti(5)O(12) Investigated by,a Novel Characterization Technique Combining in Situ X-ray Diffraction and Chemical Sodiation.NANO LETTERS,13(10),4721.
MLA	Yu, XQ,et al."A Size-Dependent Sodium Storage Mechanism in L(i)4Ti(5)O(12) Investigated by,a Novel Characterization Technique Combining in Situ X-ray Diffraction and Chemical Sodiation".NANO LETTERS 13.10(2013):4721.