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Enhanced electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via wet-chemical coating of MgO
Ma, Fei1,2; Wu, Yinghong1,2; Wei, Guangye1; Qiu, Shufeng3; Qu, Jingkui1
2019-07-01
Source PublicationJOURNAL OF SOLID STATE ELECTROCHEMISTRY
ISSN1432-8488
Volume23Issue:7Pages:2213-2224
AbstractLiNi0.8Co0.1Mn0.1O2 (NCM811) has a high potential for using as the cathode material for lithium-ion batteries (LIBs) for electric vehicles owing to its high energy density and low cost. However, its poor rate capability and cycling performance have significantly hindered its application. In this study, we successfully design a uniform magnesium oxide (MgO) coating on NCM811 via a wet-chemical coating followed by heat treatment using magnesium ethoxide [Mg (OEt)(2)] dissolved in ethanol as the Mg source. The effects of MgO coating on the surface states, crystal structure, and electrochemical performances of NCM811 cathode material are studied in detail. After 100 cycles, the capacity retention of MgO-coated NCM811 is 90.1% at room temperature at 1 C, whereas the pristine NCM811 is only 74.5%. Besides, the MgO-coated NCM811 delivers a better rate property than pristine NCM811. Prominent improvements in electrochemical performances are attributed to the fact that the formation of MgO coating layer helps to suppress deleterious side reactions, lower the overpotential on the surface, and facilitate lithium-ion diffusion.
KeywordLiNi0.8Co0.1Mn0.1O2 Wet-chemical coating Magnesium oxide Magnesium ethoxide Overpotential
DOI10.1007/s10008-019-04308-3
Language英语
WOS KeywordRICH LINI0.6CO0.2MN0.2O2 CATHODE ; LITHIUM-ION BATTERIES ; RATE CAPABILITY ; POSITIVE ELECTRODE ; AL2O3 ; LI ; LINI1/3CO1/3MN1/3O2 ; STABILITY ; CAPACITY ; OXIDE
Funding ProjectScience and Technology Service Network Plan of the Chinese Academy of Sciences[KFJ-STS-ZDTP-040] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[QYZDJ-SSW-JSC021] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-ZS-2018-1]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
Funding OrganizationScience and Technology Service Network Plan of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences
WOS IDWOS:000474477800025
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30144
Collection中国科学院过程工程研究所
Corresponding AuthorQu, Jingkui
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
3.Hangzhou Zhonghao Technol Co Ltd, Hangzhou 310000, Zhejiang, Peoples R China
Recommended Citation
GB/T 7714
Ma, Fei,Wu, Yinghong,Wei, Guangye,et al. Enhanced electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via wet-chemical coating of MgO[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2019,23(7):2213-2224.
APA Ma, Fei,Wu, Yinghong,Wei, Guangye,Qiu, Shufeng,&Qu, Jingkui.(2019).Enhanced electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via wet-chemical coating of MgO.JOURNAL OF SOLID STATE ELECTROCHEMISTRY,23(7),2213-2224.
MLA Ma, Fei,et al."Enhanced electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via wet-chemical coating of MgO".JOURNAL OF SOLID STATE ELECTROCHEMISTRY 23.7(2019):2213-2224.
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