Core-Shell Structured o-LiMnO2@Li2CO3 Nanosheet Array Cathode for High-Performance, Wide-Temperature-Tolerance Lithium-Ion Batteries

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	Core-Shell Structured o-LiMnO2@Li2CO3 Nanosheet Array Cathode for High-Performance, Wide-Temperature-Tolerance Lithium-Ion Batteries
	Guo, Junling 1; Cai, Yingjun 2; Zhang, Suojiang 2; Chen, Shimou 2; Zhang, Fengxiang 1
刊名	ACS APPLIED MATERIALS & INTERFACES
	2016-06-29
卷号	8 期号:25 页码:16116-16124
关键词	orthorhombic-LiMnO2 Li2CO3 nanosheet array synergistic effect lithium-ion batteries
ISSN号	1944-8244
英文摘要	To develop a high-capacity, high-rate, cycle-stable cathode material has long been the focus for lithium-ion battery (LIB) research. Recently, layer-structured orthorhombic-LiMnO2 (o-LMO) has attracted extensive interest owing to its large discharge capacities. However, poor cycle performance greatly hinders its practical application, especially at high temperatures. Conventional strategies to address this issue often lead to sacrificed rate performance and mostly work at low temperatures. Herein, we report a novel core shell structured, o-LiMnO2@Li2CO3 (o-LMO@Li2CO3) nanosheet array cathode, where the Li2CO3 shell improves cycle performance by preventing o-LMO dissolution in the electrolyte (even at an elevated temperature), the o-LMO core provides high capacities and the nanosheet array architecture ensures rate performance (to the best of our knowledge, this o-LMO nanosheet array architecture is reported for the first time). The above features work synergistically to give well-balanced cycle performance (79% capacity retention at 60 degrees C, 400 cycles), capacity (207 mAh g(-1) at 0.5C) and rate performance (128 mAh g(-1) at 5C) of the o-LMO@Li2CO3 cathode as well as remarkable full-cell performance (similar to 67% capacity retention for 400 cycles at similar to 2C, 60 degrees C). Our work demonstrates that the synergistic effect between the o-LMO core, Li2CO3 coating and the nanoarray structure is an effective strategy for developing high-energy/power density, high-stability LIB cathodes.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]	Science & Technology - Other Topics ; Materials Science
关键词[WOS]	NANOWIRE ARRAY ; HIGH-ENERGY ; ELECTROCHEMICAL PERFORMANCE ; LI ; ELECTRODES ; CELLS ; CARBONATE ; CAPACITY ; ANODE ; RICH
收录类别	SCI
语种	英语
WOS记录号	WOS:000378984800029
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/21192]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Dalian Univ Technol, Sch Petr & Chem Engn, State Key Lab Fine Chem, 2 Dagong Rd, Panjin 124221, Peoples R China 2.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Guo, Junling,Cai, Yingjun,Zhang, Suojiang,et al. Core-Shell Structured o-LiMnO2@Li2CO3 Nanosheet Array Cathode for High-Performance, Wide-Temperature-Tolerance Lithium-Ion Batteries[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(25):16116-16124.
APA	Guo, Junling,Cai, Yingjun,Zhang, Suojiang,Chen, Shimou,&Zhang, Fengxiang.(2016).Core-Shell Structured o-LiMnO2@Li2CO3 Nanosheet Array Cathode for High-Performance, Wide-Temperature-Tolerance Lithium-Ion Batteries.ACS APPLIED MATERIALS & INTERFACES,8(25),16116-16124.
MLA	Guo, Junling,et al."Core-Shell Structured o-LiMnO2@Li2CO3 Nanosheet Array Cathode for High-Performance, Wide-Temperature-Tolerance Lithium-Ion Batteries".ACS APPLIED MATERIALS & INTERFACES 8.25(2016):16116-16124.