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

doi:10.1115/1.4040567

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	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
刊名	JOURNAL OF ELECTROCHEMICAL ENERGY CONVERSION AND STORAGE
	2019-02
卷号	16 期号:1
关键词	lithium-ion battery cathode lithium manganese oxide porous microspheres pore size
ISSN号	2381-6872
DOI	10.1115/1.4040567
英文摘要	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 self-supporting template, for lithium ion batteries (LIBs) cathode material. Briefly, Mn2O3 and MnO2 microspheres are heated in air at 600 degrees 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+ thorn ion diffusion and increases the reaction sites for lithium insertion/extraction. Moreover, the pores can provide buffer spaces for the volume changes during charge-discharge 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 g(-1) at 0.5 C, retaining 79.6 mAh g-(1) even at 5 C. The LMO2 sample also shows good capacity retention of 96.9% after 100 cycles at 0.5 C.
资助项目	Natural Science Foundation of China[21566021][21766017]
WOS研究方向	Electrochemistry ; Energy & Fuels
语种	英语
出版者	ASME
WOS记录号	WOS:000452772600006
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32105]
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
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).