Physical properties and electrochemical performance of LiNixMn2-xO4 cathode materials prepared

IMR OpenIR

	Physical properties and electrochemical performance of LiNixMn2-xO4 cathode materials prepared
	G. G. Wang; J. M. Wang; W. Q. Mao; J. Q. Zhang; C. N. Cao
	2006
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	22 期号:1 页码:19-24
摘要	To improve the cycle performance of spinel LiMn2O4 as the cathode material of 4 V class Li secondary batteries, LiNixMn2-xO4 (x=0 similar to 0.3) samples were prepared using a simple precipitation method, and the effects of Ni doping on the physical properties and electrochemical performance of the samples were investigated using various methods. All LiNixMn2-xO4 (x=0-0.3) compounds show a single spinel phase, and the lattice parameter (a), the unit cell volume (v) and particle size decrease with increasing Ni content. The results of the electrochemical experiments showed that the initial charge-discharge capacity of LiNixMn2-xO4 samples in the 3.0 similar to 4.4 V range decreases with increasing Ni content except for pure LiMn2O4; however, the capacity in the 4.4 similar to 4.9 V range increases with the increasing Ni content. For spinel samples Ni substitution can contribute to the improvement of their cycle performance due to the formation of the stronger Ni-O bond, homogeneous morphology, and sub-micron sized particles, and the sample with x=0.05 has larger peak currents, higher initial capacity and better cycling capability due to its lower electrochemical and diffusion polarization than those of other samples.
部门归属	zhejiang univ, dept chem, hangzhou 310027, peoples r china. cas, state key lab corros & protect, inst met res, shenyang 110016, peoples r china.;wang, jm (reprint author), zhejiang univ, dept chem, hangzhou 310027, peoples r china;wjm@cmsce.zju.edu.cn
关键词	Ni-substituted Limn2o4 Electrochemical Performance Electrochemical Impedance Spectroscopy Li-ion Batteries Secondary Lithium Batteries Electrode Material Limn2o4 Fe Ni
URL	查看原文
WOS记录号	WOS:000235151200002
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34500
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. G. Wang,J. M. Wang,W. Q. Mao,et al. Physical properties and electrochemical performance of LiNixMn2-xO4 cathode materials prepared[J]. Journal of Materials Science & Technology,2006,22(1):19-24.
APA	G. G. Wang,J. M. Wang,W. Q. Mao,J. Q. Zhang,&C. N. Cao.(2006).Physical properties and electrochemical performance of LiNixMn2-xO4 cathode materials prepared.Journal of Materials Science & Technology,22(1),19-24.
MLA	G. G. Wang,et al."Physical properties and electrochemical performance of LiNixMn2-xO4 cathode materials prepared".Journal of Materials Science & Technology 22.1(2006):19-24.