Feasibility of Using Li2MoO3 in Constructing Li-Rich High Energy Density Cathode Materials

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Feasibility of Using Li2MoO3 in Constructing Li-Rich High Energy Density Cathode Materials
	Ma, J ; Zhou, YN ; Gao, YR ; Yu, XQ ; Kong, QY ; Gu, L ; Wang, ZX ; Yang, XQ ; Chen, LQ
刊名	CHEMISTRY OF MATERIALS
	2014
卷号	26 期号:10 页码:3256
ISSN号	0897-4756
通讯作者	Kong, QY (reprint author), Argonne Natl Lab, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
中文摘要	Layer-structured xLi(2)MnO(3)center dot(1 - x)LiMO2 are promising cathode materials for high energy-density Li-ion batteries because they deliver high capacities due to the stabilizing effect of Li2MnO3. However, the inherent disadvantages of Li2MnO3 make these materials suffer from drawbacks such as fast energy-density decay, poor rate performance and safety hazard. In this paper, we propose to replace Li2MnO3 with Li2MoO3 for constructing novel Li-rich cathode materials and evaluate its feasibility. Comprehensive studies by X-ray diffraction, X-ray absorption spectroscopy, and spherical-aberration-corrected scanning transmission electron microscopy clarify its lithium extraction/insertion mechanism and shows that the Mo4+/Mo6+ redox couple in Li2MoO3 can accomplish the task of charge compensation upon Li removal. Other properties of Li2MoO3 such as the nearly reversible Mo-ion migration to/from the Li vacancies, absence of oxygen evolution, and reversible phase transition during initial (de)lithiation indicate that Li2MoO3 meets the requirements to an ideal replacement of Li2MnO3 in constructing Li2MoO3-based Li-rich cathode materials with superior performances.
资助信息	National Natural Science Foundation of China (NSFC) [51372268]; National 973 Program of China [2009CB220100]; U.S. Department of Energy; Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies [DEAC02-98CH10886]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/58957]
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	Ma, J,Zhou, YN,Gao, YR,et al. Feasibility of Using Li2MoO3 in Constructing Li-Rich High Energy Density Cathode Materials[J]. CHEMISTRY OF MATERIALS,2014,26(10):3256.
APA	Ma, J.,Zhou, YN.,Gao, YR.,Yu, XQ.,Kong, QY.,...&Chen, LQ.(2014).Feasibility of Using Li2MoO3 in Constructing Li-Rich High Energy Density Cathode Materials.CHEMISTRY OF MATERIALS,26(10),3256.
MLA	Ma, J,et al."Feasibility of Using Li2MoO3 in Constructing Li-Rich High Energy Density Cathode Materials".CHEMISTRY OF MATERIALS 26.10(2014):3256.