Direct Evidence of Concurrent Solid-Solution and Two-Phase Reactions and the Nonequilibrium Structural Evolution of LiFePO4

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	Direct Evidence of Concurrent Solid-Solution and Two-Phase Reactions and the Nonequilibrium Structural Evolution of LiFePO4
	Sharma, N ; Guo, XW ; Du, GD ; Guo, ZP ; Wang, JZ ; Wang, ZX ; Peterson, VK
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	2012
卷号	134 期号:18 页码:7867
关键词	RECHARGEABLE LITHIUM BATTERIES SITU NEUTRON-DIFFRACTION POSITIVE-ELECTRODE MATERIALS DOMINO-CASCADE MODEL ROOM-TEMPERATURE ION BATTERIES LI-ION X-RAY MISCIBILITY GAP ANODE MATERIAL
ISSN号	0002-7863
通讯作者	Sharma, N: Australian Nucl Sci & Technol Org, Bragg Inst, Locked Bag 2001, Kirrawee Dc, NSW 2232, Australia.
中文摘要	Lithium-ion batteries power many portable devices and in the future are likely to play a significant role in sustainable-energy systems for transportation and the electrical grid. LiFePO4 is a candidate cathode material for second-generation lithium-ion batteries, bringing a high rate capability to this technology. LiFePO4 functions as a cathode where delithiation occurs via either a solid-solution or a two-phase mechanism, the pathway taken being influenced by sample preparation and electrochemical conditions. The details of the delithiation pathway and the relationship between the two-phase and solid-solution reactions remain controversial. Here we report, using real-time in situ neutron powder diffraction, the simultaneous occurrence of solid-solution and two-phase reactions after deep discharge in nonequilibrium conditions. This work is an example of the experimental investigation of nonequilibrium states in a commercially available LiFePO4 cathode and reveals the concurrent occurrence of and transition between the solid-solution and two-phase reactions.
收录类别	SCI
资助信息	Australian Research Council (ARC) [DP1094261]; ANSTO within the Bragg Institute
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/36019]
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	Sharma, N,Guo, XW,Du, GD,et al. Direct Evidence of Concurrent Solid-Solution and Two-Phase Reactions and the Nonequilibrium Structural Evolution of LiFePO4[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2012,134(18):7867.
APA	Sharma, N.,Guo, XW.,Du, GD.,Guo, ZP.,Wang, JZ.,...&Peterson, VK.(2012).Direct Evidence of Concurrent Solid-Solution and Two-Phase Reactions and the Nonequilibrium Structural Evolution of LiFePO4.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,134(18),7867.
MLA	Sharma, N,et al."Direct Evidence of Concurrent Solid-Solution and Two-Phase Reactions and the Nonequilibrium Structural Evolution of LiFePO4".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134.18(2012):7867.