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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
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume8Issue:25Pages:16116-16124
AbstractTo 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.
KeywordOrthorhombic-limno2 Li2co3 Nanosheet Array Synergistic Effect Lithium-ion Batteries
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acsami.6b04616
Indexed BySCI
Language英语
WOS KeywordNANOWIRE ARRAY ; HIGH-ENERGY ; ELECTROCHEMICAL PERFORMANCE ; LI ; ELECTRODES ; CELLS ; CARBONATE ; CAPACITY ; ANODE ; RICH
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding Organization973 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 IDWOS:000378984800029
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21192
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.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
Recommended Citation
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.
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