Unravelling the Structure and Electrochemical Performance of Li-Cr-Mn-O Cathodes: From Spinel to Layered

doi:10.1021/acsami.7b18097

	Unravelling the Structure and Electrochemical Performance of Li-Cr-Mn-O Cathodes: From Spinel to Layered
	Li, Xuelei 1; Li, Dan 1; Song, Dawei 1; Shi, Xixi 1; Tang, Xu 2; Zhang, Hongzhou 1; Zhang, Lianqi 1
刊名	ACS APPLIED MATERIALS & INTERFACES
	2018-03-14
卷号	10 期号:10 页码:8827-8835
关键词	lithium-ion batteries cathode materials Li-Cr-Mn-O oxides spinel-layered composite structure electrochemical performance
ISSN号	1944-8244
DOI	10.1021/acsami.7b18097
文献子类	Article
英文摘要	To explore a new series of cathode materials with high electrochemical performance, the spinel layered (1 - x)[LiCrMnO4]center dot x[Li2MnO3 center dot LiCrO2] (x = 0, 0.25, 0.5, 0.75, and 1) composites are synthesized with the sol-gel method. X-ray diffraction, high-resolution transmission electron microscopy, selected area electron diffraction, and Raman spectra reveal that the structure of the (1 - x)[LiCrMnO4]center dot x[Li2MnO3 center dot LiCrO2] cathode materials evolves from spinel to hybrid spinel layered and layered structures with the increase of the Li concentration. Test results reveal that the structure and electrochemical performance of (1 - x)[LiCrMnO4]-x[Li2MnO3 center dot LiCrO2] (x = 0.25, 0.5 and 0.75) composites have the characteristics of both spinel (x = 0) and Li-rich layered phases (x = 1). In particular, x = 0.5 and 0.75 electrodes exhibit relatively high capacity retention and rate capability, which is mainly ascribed to the synergistic effect of the spinel and Li-rich layered phases, the 3D Li-ion diffusion channels of the spinel phase, and the low charge-transfer resistance (R-ct) and Warburg diffusion impedance (W-o).
WOS关键词	LITHIUM-ION BATTERIES ; HIGH-VOLTAGE LINI0.5MN1.5O4 ; HIGH-CAPACITY ; RATE CAPABILITY ; COMPOSITE CATHODES ; OXIDE ; ELECTRODES ; STABILITY ; LIMN2O4 ; SURFACE
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000427910800046
资助机构	National Key R&D Program of China(2017YFB0102000) ; National Key R&D Program of China(2017YFB0102000) ; NSFC(U1764255 ; NSFC(U1764255 ; Tianjin Sci. Tech. Program(16JCQNJC03300 ; Tianjin Sci. Tech. Program(16JCQNJC03300 ; 21503148) ; 21503148) ; 15ZCZDGX00660 ; 15ZCZDGX00660 ; 16YFZCGX00250) ; 16YFZCGX00250) ; National Key R&D Program of China(2017YFB0102000) ; National Key R&D Program of China(2017YFB0102000) ; NSFC(U1764255 ; NSFC(U1764255 ; Tianjin Sci. Tech. Program(16JCQNJC03300 ; Tianjin Sci. Tech. Program(16JCQNJC03300 ; 21503148) ; 21503148) ; 15ZCZDGX00660 ; 15ZCZDGX00660 ; 16YFZCGX00250) ; 16YFZCGX00250) ; National Key R&D Program of China(2017YFB0102000) ; National Key R&D Program of China(2017YFB0102000) ; NSFC(U1764255 ; NSFC(U1764255 ; Tianjin Sci. Tech. Program(16JCQNJC03300 ; Tianjin Sci. Tech. Program(16JCQNJC03300 ; 21503148) ; 21503148) ; 15ZCZDGX00660 ; 15ZCZDGX00660 ; 16YFZCGX00250) ; 16YFZCGX00250) ; National Key R&D Program of China(2017YFB0102000) ; National Key R&D Program of China(2017YFB0102000) ; NSFC(U1764255 ; NSFC(U1764255 ; Tianjin Sci. Tech. Program(16JCQNJC03300 ; Tianjin Sci. Tech. Program(16JCQNJC03300 ; 21503148) ; 21503148) ; 15ZCZDGX00660 ; 15ZCZDGX00660 ; 16YFZCGX00250) ; 16YFZCGX00250)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/83075]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang, Hongzhou; Zhang, Lianqi
作者单位	1.Tianjin Univ Technol, Sch Mat Sci & Engn, Tianjin Key Lab Photoelect Mat & Devices, Tianjin 300384, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Electron Microscopy Lab, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Li, Xuelei,Li, Dan,Song, Dawei,et al. Unravelling the Structure and Electrochemical Performance of Li-Cr-Mn-O Cathodes: From Spinel to Layered[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(10):8827-8835.
APA	Li, Xuelei.,Li, Dan.,Song, Dawei.,Shi, Xixi.,Tang, Xu.,...&Zhang, Lianqi.(2018).Unravelling the Structure and Electrochemical Performance of Li-Cr-Mn-O Cathodes: From Spinel to Layered.ACS APPLIED MATERIALS & INTERFACES,10(10),8827-8835.
MLA	Li, Xuelei,et al."Unravelling the Structure and Electrochemical Performance of Li-Cr-Mn-O Cathodes: From Spinel to Layered".ACS APPLIED MATERIALS & INTERFACES 10.10(2018):8827-8835.