A modified Al2O3 coating process to enhance the electrochemical   performance of Li(Ni1/3Co1/3Mn1/3)O-2 and its comparison with   traditional Al2O3 coating process

doi:10.1016/j.jpowsour.2010.07.021

CORC > 北京大学 > 化学与分子工程学院

	A modified Al2O3 coating process to enhance the electrochemical performance of Li(Ni1/3Co1/3Mn1/3)O-2 and its comparison with traditional Al2O3 coating process
	Huang, Youyuan ; Chen, Jitao ; Cheng, Fuquan ; Wan, Wang ; Liu, Wen ; Zhou, Henghui ; Zhang, Xinxiang
刊名	电源杂志
	2010
关键词	Lithium-ion batteries Lithium nickel cobalt manganese oxide Alumina coating Modification LITHIUM-ION BATTERIES CATHODE MATERIALS INSERTION MATERIAL LICO1/3NI1/3MN1/3O2 INTERFACE
DOI	10.1016/j.jpowsour.2010.07.021
英文摘要	Al2O3-modified Li(Ni1/3Co1/3Mn1/3)O-2 is synthesized by a modified Al2O3 coating process. The Al2O3 coating is carried out on an intermediate, (Ni1/3Co1/3Mn1/3)(OH)(2), rather than on Li(Ni1/3Co1/3Mn1/3)O-2. As a comparison, Al2O3-coated Li(Ni1/3Co1/3Mn1/3)O-2 also is prepared by traditional Al2O3 coating process. The effects of Al2O3 coating and Al2O3 modification on structure and electrochemical performance are investigated and compared. Electrochemical tests indicate that cycle performance and rate capability of Li(Ni1/3Co1/3Mn1/3)O-2 are enhanced by Al2O3 modification without capacity loss. Al2O3 coating can also enhance the cycle performance but cause evident capacity loss and decline of rate capability. The effect of Al2O3 coating and Al2O3 modification on kinetics of lithium-ion transfer reaction at the interface of electrode/electrolyte is investigated via electrochemical impedance spectra (EIS). The result support that the Al2O3 modification increase Li+ diffused coefficient and decrease the activation energy of Li+ transfer reaction but the traditional Al2O3 coating lead to depression of Li+ diffused coefficient and increase of activation energy. (c) 2010 Elsevier B.V. All rights reserved.; Electrochemistry; Energy & Fuels; SCI(E); EI; 32; ARTICLE; 24,SI; 8267-8274; 195
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151111]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Huang, Youyuan,Chen, Jitao,Cheng, Fuquan,et al. A modified Al2O3 coating process to enhance the electrochemical performance of Li(Ni1/3Co1/3Mn1/3)O-2 and its comparison with traditional Al2O3 coating process[J]. 电源杂志,2010.
APA	Huang, Youyuan.,Chen, Jitao.,Cheng, Fuquan.,Wan, Wang.,Liu, Wen.,...&Zhang, Xinxiang.(2010).A modified Al2O3 coating process to enhance the electrochemical performance of Li(Ni1/3Co1/3Mn1/3)O-2 and its comparison with traditional Al2O3 coating process.电源杂志.
MLA	Huang, Youyuan,et al."A modified Al2O3 coating process to enhance the electrochemical performance of Li(Ni1/3Co1/3Mn1/3)O-2 and its comparison with traditional Al2O3 coating process".电源杂志 (2010).