Core-Shell Structured o-LiMnO2@Li2CO3 Nanosheet Array Cathode for High-Performance, Wide-Temperature-Tolerance Lithium-Ion Batteries
Guo, Junling1; Cai, Yingjun2; Zhang, Suojiang2; Chen, Shimou2; Zhang, Fengxiang1
2016-06-29
发表期刊ACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
卷号8期号:25页码:16116-16124
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.
关键词Orthorhombic-limno2 Li2co3 Nanosheet Array Synergistic Effect Lithium-ion Batteries
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1021/acsami.6b04616
收录类别SCI
语种英语
关键词[WOS]NANOWIRE ARRAY ; HIGH-ENERGY ; ELECTROCHEMICAL PERFORMANCE ; LI ; ELECTRODES ; CELLS ; CARBONATE ; CAPACITY ; ANODE ; RICH
WOS研究方向Science & Technology - Other Topics ; Materials Science
WOS类目Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
项目资助者973 program(2014CB239701) ; National Natural Science Foundation of China(21276252 ; "Strategic Priority Research Program" of the Chinese Academy of Sciences(XDA09010103) ; Fundamental Research Funds for the Central Universities(DUT14RC(3)020) ; Fund of State Key Laboratory of Fine Chemicals Panjin(JH2014009) ; 91434203)
WOS记录号WOS:000378984800029
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被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21192
专题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
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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.
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