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Improvement of electrochemical performance of LiNi(0.8)Co(0.1)Mn(0.1)O(2)cathode material via Li2.09W0.9Nb0.1O4Li-ion conductive coating layer

文献类型：期刊论文

作者Zhang, Xinghan1,2; Ma, Fei1; Wei, Guangye1; Lei, Ze2; Qu, Jingkui1
刊名JOURNAL OF SOLID STATE ELECTROCHEMISTRY
出版日期2020-06-30
页码13
关键词Lithium-ion batteries NCM811 cathode Li2 09W0 9Nb0 1O(4)modification Li-ion conductivity
ISSN号1432-8488
DOI10.1007/s10008-020-04742-8
英文摘要Recently, niobium tungsten oxide has garnered considerable attention owing to its excellent Li-ion diffusion rate and prominent structural stability during charge-discharge cycles. Here, a cathode material (LiNi0.8Co0.1Mn0.1O2, NCM811) for Li-ion batteries is successfully coated with Li-ion conductive Li(2.09)W(0.9)Nb(0.1)O(4)using a simple wet-chemical coating method followed by high-temperature sintering. A physicochemical phase analysis reveals that a 4-5-nm-thick coating with a Li(2.09)W(0.9)Nb(0.1)O(4)crystal structure is evenly distributed on the surface of the cathode particles. Among cathodes coated with different amounts of material, the one coated with 0.5 wt% Li(2.09)W(0.9)Nb(0.1)O(4)yielded the best overall performance, with a high discharge capacity of 136.8 mAh g(-1)at 10 C and long-term cycling stability with a capacity retention of 91.7% after 100 cycles at 1 C. This excellent electrochemical performance can be attributed to the coating's ability to prevent the impedance from increasing and the Li-ion diffusion coefficient from decaying. In addition, it protects the cathode from side reactions and stabilizes the structure during cycling.
WOS关键词LINI0.8CO0.1MN0.1O2 CATHODE MATERIAL ; NI-RICH LINI0.8CO0.1MN0.1O2 ; LITHIUM-ION BATTERIES ; HIGH CUTOFF VOLTAGE ; CYCLING PERFORMANCE ; LINI0.6CO0.2MN0.2O2 CATHODE ; ELECTRODE MATERIALS ; THERMAL-STABILITY ; SURFACE MODIFICATION ; RATE CAPABILITY
资助项目Science 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-SSWJSC021] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-ZS-2018-1]
WOS研究方向Electrochemistry
语种英语
WOS记录号WOS:000546334000001
出版者SPRINGER
资助机构Science 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
源URL[http://ir.ipe.ac.cn/handle/122111/41296]  
专题中国科学院过程工程研究所
通讯作者Qu, Jingkui
作者单位1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xinghan,Ma, Fei,Wei, Guangye,et al. Improvement of electrochemical performance of LiNi(0.8)Co(0.1)Mn(0.1)O(2)cathode material via Li2.09W0.9Nb0.1O4Li-ion conductive coating layer[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2020:13.
APA Zhang, Xinghan,Ma, Fei,Wei, Guangye,Lei, Ze,&Qu, Jingkui.(2020).Improvement of electrochemical performance of LiNi(0.8)Co(0.1)Mn(0.1)O(2)cathode material via Li2.09W0.9Nb0.1O4Li-ion conductive coating layer.JOURNAL OF SOLID STATE ELECTROCHEMISTRY,13.
MLA Zhang, Xinghan,et al."Improvement of electrochemical performance of LiNi(0.8)Co(0.1)Mn(0.1)O(2)cathode material via Li2.09W0.9Nb0.1O4Li-ion conductive coating layer".JOURNAL OF SOLID STATE ELECTROCHEMISTRY (2020):13.

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来源：过程工程研究所

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