Porous LiMn2O4 Nano-Microspheres as Durable High Power Cathode Materials for Lithium Ion Batteries

doi:10.1134/S1023193519040037

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	Porous LiMn2O4 Nano-Microspheres as Durable High Power Cathode Materials for Lithium Ion Batteries
	Cui, Xiaoling 1,2,3; Feng, Huixia 1,2,3; Liu, Jinliang 3; Tang, Fengjuan 3; Li, Hongliang 3
刊名	Russian Journal of Electrochemistry
	2019-05-01
卷号	55 期号:5 页码:351-357
关键词	Cathode materials Cathodes Electric discharges Ions Lithium compounds Manganese oxide Microspheres Nanocrystalline materials Nanoparticles Scanning electron microscopy Spheres Synthesis (chemical) Discharge capacities Electrochemical performance Electrochemical polarization Electrochemical stabilities High-performance lithium-ion batteries Lithium manganese oxide Porous spheres Structure and performance
ISSN号	10231935
DOI	10.1134/S1023193519040037
英文摘要	Porous LiMn2O4 spheres was easily fabricated with MnCO3 spheres and MnO2 as precursors and characterized in terms of structure and performance as the cathode of a lithium ion battery. The presence of pores with the average size of about 50 nm throughout the whole LiMn2O4 microspheres was confirmed by scanning electron microscope (SEM) and N2 adsorption-desorption measurements. The electrochemical tests show that the synthesized product has smaller electrochemical polarization, faster Li-ion intercalation kinetics and higher electrochemical stability. It exhibits excellent rate capability and cyclic stability: delivering a reversible discharge capacity of 71 mA h g−1 at a 5 C rate and yielding a capacity retention of over 92% at a rate of 0.5 C after 100 cycles. The superior performance of the synthesized product is attributed to its special structure: porous secondary spheres particles consisting of primary single-crystalline nanoparticles. The nanoparticle reduces the path of Li-ion diffusion and increases the reaction sites for lithium insertion/extraction, the pores provide room to buffer the volume changes during charge-discharge and the single crystalline nanoparticle endows the spinel with the best stability. Taking the excellent electrochemical performance and facile synthesis into consideration, the presented porous LiMn2O4 spheres could be a competitive candidate cathode material for high-performance lithium-ion batteries. © 2019, Pleiades Publishing, Ltd.
WOS研究方向	Electrochemistry
语种	英语
出版者	Pleiades journals
WOS记录号	WOS:000471645400001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150488]
专题	石油化工学院教务处（创新创业学院）
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Cui, Xiaoling,Feng, Huixia,Liu, Jinliang,et al. Porous LiMn2O4 Nano-Microspheres as Durable High Power Cathode Materials for Lithium Ion Batteries[J]. Russian Journal of Electrochemistry,2019,55(5):351-357.
APA	Cui, Xiaoling,Feng, Huixia,Liu, Jinliang,Tang, Fengjuan,&Li, Hongliang.(2019).Porous LiMn2O4 Nano-Microspheres as Durable High Power Cathode Materials for Lithium Ion Batteries.Russian Journal of Electrochemistry,55(5),351-357.
MLA	Cui, Xiaoling,et al."Porous LiMn2O4 Nano-Microspheres as Durable High Power Cathode Materials for Lithium Ion Batteries".Russian Journal of Electrochemistry 55.5(2019):351-357.