Synthesis of Hollow Microspheres LiNi0.5Mn1.5O4Coated with Al2O3and Characterization of the Electrochemical Capabilities

doi:10.1115/1.4045566

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Synthesis of Hollow Microspheres LiNi0.5Mn1.5O4Coated with Al2O3and Characterization of the Electrochemical Capabilities
	Li, Shiyou 1,2,3; Liang, Wenbiao 1; Xie, Jing 1; Wei, Yuan 1; Cui, Xiaoling 1,2,3
刊名	Journal of Electrochemical Energy Conversion and Storage
	2020
卷号	17 期号:3
关键词	Alumina Aluminum oxide Cathodes Coatings Crystallinity Lithium-ion batteries Manganese compounds Nickel compoundsCapacity retention Diffusion channels Discharge specific capacity High energy densities High power density Hollow microsphere Modified coprecipitation method Power lithium ion batteries
ISSN号	23816872
DOI	10.1115/1.4045566
英文摘要	Spinel LiNi0.5Mn1.5O4 (LNMO) has become one of the most practical power lithium-ion battery cathode materials due to its advantages of three-dimensional Li+ diffusion channel, higher potential window (3.5-5V), high-energy density (∼660 Wh/kg), and high-power density. In this manuscript, a hollow spherical LNMO material with large size and high crystallinity is prepared by a modified coprecipitation method using ethyl alcohol as a peptizator. Subsequently, the prepared LNMO material is further modified by an Al2O3 coating to improve its cycle stability. Results show that the initial discharge-specific capacity of LNMO material with 1 wt% Al2O3 coating is 133.7 mAh g-1 at 0.2 C rate, and the capacity retention rate is 97.7% after 100 cycles. The effective increase in the cycle life of the battery can be attributed to the uniform and dense Al2O3 coating on the surface of the material. © 2019 by ASME.
WOS研究方向	Electrochemistry ; Energy & Fuels
语种	英语
出版者	American Society of Mechanical Engineers (ASME)
WOS记录号	WOS:000582676700007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/132323]
专题	石油化工学院
作者单位	1.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Qinghai Research Center of Low-temperature Lithium-Ion Battery Technology Engineering, Qinghai Green Grass New Energy Technology Co. Ltd., Xining; 810000, China; 3.Gansu Engineering Laboratory of Electrolyte Material for Lithium-Ion Battery, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Li, Shiyou,Liang, Wenbiao,Xie, Jing,et al. Synthesis of Hollow Microspheres LiNi0.5Mn1.5O4Coated with Al2O3and Characterization of the Electrochemical Capabilities[J]. Journal of Electrochemical Energy Conversion and Storage,2020,17(3).
APA	Li, Shiyou,Liang, Wenbiao,Xie, Jing,Wei, Yuan,&Cui, Xiaoling.(2020).Synthesis of Hollow Microspheres LiNi0.5Mn1.5O4Coated with Al2O3and Characterization of the Electrochemical Capabilities.Journal of Electrochemical Energy Conversion and Storage,17(3).
MLA	Li, Shiyou,et al."Synthesis of Hollow Microspheres LiNi0.5Mn1.5O4Coated with Al2O3and Characterization of the Electrochemical Capabilities".Journal of Electrochemical Energy Conversion and Storage 17.3(2020).