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Mg doping improving the cycle stability of LiNi0.5Mn0.5O2 at high voltage
Yang, Guowei1,2,3; Zhao, Enyue2; Chen, Minmin2; Cheng, Yingzhi4; Xue, Li4; Hu, Zhongbo2; Xiao, Xiaoling2; Li, Faqiang1,3
2017-11-01
Source PublicationJOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume21Issue:11Pages:3195-3203
SubtypeArticle
AbstractA series of LiNi0.5-x Mg (x) Mn0.5O2 (0 <= x <= 0.1) samples are synthesized by a combination of coprecipitation (CP) and solid-state reaction. After electrochemical measurements, the discharge capacity and cycle stability of LiNi0.5Mn0.5O2 can be obviously improved by Mg doping and the best doping amount is 5%. Most importantly, the cycle stability of LiNi0.5Mn0.5O2 at high voltage can be greatly improved by Mg doping. Specifically, capacity retention of 5% Mg-doping sample improves 16% than that of pure LiNi0.5Mn0.5O2 in the range of 3.0 similar to 4.6 V. We find Mg doping can lower the Li/Ni cation mixing, reduce migration resistance, and retard polarization, in turn, improve the electrochemical properties of LiNi0.5-x Mg (x) Mn0.5O2.
KeywordLithium-ion Batteries Cathode Lini0.5mn0.5o2 Mg Doping Li/ni Cation Mixing
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordLITHIUM-ION BATTERIES ; CATHODE MATERIALS ; ELECTROCHEMICAL PERFORMANCE ; SECONDARY BATTERIES ; ELECTRODE MATERIAL ; CO ; LI ; AL ; BEHAVIOR ; ROUTE
Indexed BySCI
Language英语
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000413763100013
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6279
Collection青海盐湖研究所知识仓储
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China
2.Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China
4.Shandong Univ Technol, Sch Chem Engn, Zibo 255049, Peoples R China
Recommended Citation
GB/T 7714
Yang, Guowei,Zhao, Enyue,Chen, Minmin,et al. Mg doping improving the cycle stability of LiNi0.5Mn0.5O2 at high voltage[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2017,21(11):3195-3203.
APA Yang, Guowei.,Zhao, Enyue.,Chen, Minmin.,Cheng, Yingzhi.,Xue, Li.,...&Li, Faqiang.(2017).Mg doping improving the cycle stability of LiNi0.5Mn0.5O2 at high voltage.JOURNAL OF SOLID STATE ELECTROCHEMISTRY,21(11),3195-3203.
MLA Yang, Guowei,et al."Mg doping improving the cycle stability of LiNi0.5Mn0.5O2 at high voltage".JOURNAL OF SOLID STATE ELECTROCHEMISTRY 21.11(2017):3195-3203.
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