Porous LiMn2O4 Microspheres with Different Pore Size: Preparation and Application as Cathode Materials for Lithium Ion Batteries

doi:10.1115/1.4040567

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	Porous LiMn2O4 Microspheres with Different Pore Size: Preparation and Application as Cathode Materials for Lithium Ion Batteries
	Li, Shiyou; Zhu, Konglei; Liu, Jinliang; Zhao, Dongni; Cui, Xiaoling
	2019-02-01
发表期刊	Journal of Electrochemical Energy Conversion and Storage
ISSN	23816872
卷号	16 期号:1
摘要	Three types of LiMn2O4 (LMO) microspheres with different pore size are prepared by a facile method, using porous MnCO3-MnO2 and Mn2O3 microspheres as the selfsupporting template, for lithium ion batteries (LIBs) cathode material. Briefly, Mn2O3 and MnO2 microspheres are heated in air at 600 C for 10 h to synthesize porous Mn2O3 spheres. Then the mixture of as-prepared spherical Mn2O3 and LiNO3 is calcined to obtain the LMOs. The morphology and structure of LMOs are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and nitrogen adsorption/desorption analyses. The result shows that the maximum pore diameters of LMOs are 17 nm, 19 nm, and 11 nm, respectively. All LMOs microspheres are composed of similar sized nanoparticles; however, the surface of these microspheres is strewed with dense tinier pores or sparse larger pores. Generally, the nanoparticles will reduce the path of Li- ion diffusion and increases the reaction sites for lithium insertion/extraction. Moreover, the pores can provide buffer spaces for the volume changes during chargedischarge process. The electrochemical performances of LMOs are investigated and LMO2 exhibits extremely good electrochemical behavior, especially the rate capability. The as-prepared LMO2 delivers a discharge capacity of 124.3 mAh g1 at 0.5 C, retaining 79.6 mAh g1 even at 5 C. The LMO2 sample also shows good capacity retention of 96.9% after 100 cycles at 0.5 C. Copyright © 2019 by ASME.
关键词	Cathodes Electric discharges Gas adsorption Ions Lithium compounds Manganese oxide Microspheres Morphology Nanoparticles Pore size Scanning electron microscopy Silicon compounds Charge-discharge process Discharge capacities Electrochemical behaviors Electrochemical performance Good capacity retentions Lithium manganese oxide Morphology and structures Porous microspheres
DOI	10.1115/1.4040567
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Electrochemistry ; Energy & Fuels
WOS类目	Electrochemistry ; Energy & Fuels
WOS记录号	WOS:000452772600006
出版者	American Society of Mechanical Engineers (ASME)
EI入藏号	20183105621209
EI主题词	Lithium-ion batteries
EI分类号	701.1 Electricity: Basic Concepts and Phenomena - 761 Nanotechnology - 802.3 Chemical Operations - 804 Chemical Products Generally - 933 Solid State Physics - 951 Materials Science
来源库	Compendex
分类代码	701.1 Electricity: Basic Concepts and Phenomena - 761 Nanotechnology - 802.3 Chemical Operations - 804 Chemical Products Generally - 933 Solid State Physics - 951 Materials Science
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/113778
专题	石油化工学院
通讯作者	Cui, Xiaoling
作者单位	Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	石油化工学院
通讯作者单位	石油化工学院
第一作者的第一单位	石油化工学院
推荐引用方式 GB/T 7714	Li, Shiyou,Zhu, Konglei,Liu, Jinliang,et al. Porous LiMn2O4 Microspheres with Different Pore Size: Preparation and Application as Cathode Materials for Lithium Ion Batteries[J]. Journal of Electrochemical Energy Conversion and Storage,2019,16(1).
APA	Li, Shiyou,Zhu, Konglei,Liu, Jinliang,Zhao, Dongni,&Cui, Xiaoling.(2019).Porous LiMn2O4 Microspheres with Different Pore Size: Preparation and Application as Cathode Materials for Lithium Ion Batteries.Journal of Electrochemical Energy Conversion and Storage,16(1).
MLA	Li, Shiyou,et al."Porous LiMn2O4 Microspheres with Different Pore Size: Preparation and Application as Cathode Materials for Lithium Ion Batteries".Journal of Electrochemical Energy Conversion and Storage 16.1(2019).