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Suppressing oxygen vacancies on the surface of Li-rich material as a high-energy cathode via high oxygen affinity Ca(0.95)Bi(0.05)MnO(3 )coating

文献类型：期刊论文

作者Ji, Xueqian3,5; Xu, Yuxing3,6; Zhou, Yuncheng3,5; Song, Jiechen3,5; Feng, Hailan3,6; Wang, Pengfei3,6; Yang, Jun3; Zhuge, Fuchang2; Xie, Haijiao1; Tan, Qiangqiang3,4,5,6
刊名ELECTROCHIMICA ACTA
出版日期2022-07-20
卷号421页码:9
ISSN号0013-4686
关键词Lithium-ion batteries Li-rich materials Surface modification Multifunctional coating layers Oxygen redox reactions
DOI10.1016/j.electacta.2022.140465
英文摘要Because of high energy density and work voltage, the Li-rich materials are considered to be one of the most promising next-generation lithium-ion batteries. However, the commercial applications are limited by the capacity loss, poor rate capability, and voltage decay during cycling. Herein, functionalizing the surface of Li1.2Mn0.54Ni0.13Co0.13O2 by Ca0.95Bi0.05MnO3 is proposed, which suppresses the formation of the oxygen vacancies and maintains structural stability by high oxygen affinity and alleviative electrolyte corrosion. Electrochemical tests demonstrate that this admirable electrode delivers excellent cycling stability. The Li-rich electrode decorated with 5 wt.% Ca0.95Bi0.05MnO3 exhibits a stable capacity retention of 86.5% at 0.1C after 200 cycles and an excellent full cell performance with the energy retention of 95.4% at 0.1C after 100 cycles. Moreover, the voltage decay of the modified material is restrained from 5.02 to 3.07 mV per cycle over 200 cycles. The finding here sheds new light on the development of the better Li-rich cathodes for improving electrochemical performance of electrode materials.
WOS关键词ELECTROCHEMICAL PERFORMANCE ; LAYERED OXIDE ; ANION REDOX ; INTERPHASE ; VOLTAGE ; TEMPERATURE ; STABILITY ; NANORODS
资助项目National Natural Science Foundation of China[51902310] ; Open Research Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2021-d-13] ; Joint Funds of Innovation Academy for Green Manufacture of Chinese Academy of Sciences[IAGM2020C02]
WOS研究方向Electrochemistry
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000804946100002
资助机构National Natural Science Foundation of China ; Open Research Fund of State Key Laboratory of Multiphase Complex Systems ; Joint Funds of Innovation Academy for Green Manufacture of Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/53615]  
专题中国科学院过程工程研究所
通讯作者Zhuge, Fuchang; Tan, Qiangqiang
作者单位1.Hangzhou Yanqu Informat Technol Co Ltd, Hangzhou 310003, Peoples R China
2.Gansu Daxiang Energy Technol Co Ltd, Lanzhou 730913, Gansu, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
5.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
6.Hebei Technol Innovat Ctr Adv Energy Mat, Langfang 065001, Peoples R China
推荐引用方式
GB/T 7714		 Ji, Xueqian,Xu, Yuxing,Zhou, Yuncheng,et al. Suppressing oxygen vacancies on the surface of Li-rich material as a high-energy cathode via high oxygen affinity Ca(0.95)Bi(0.05)MnO(3 )coating[J]. ELECTROCHIMICA ACTA,2022,421:9.
APA Ji, Xueqian.,Xu, Yuxing.,Zhou, Yuncheng.,Song, Jiechen.,Feng, Hailan.,...&Tan, Qiangqiang.(2022).Suppressing oxygen vacancies on the surface of Li-rich material as a high-energy cathode via high oxygen affinity Ca(0.95)Bi(0.05)MnO(3 )coating.ELECTROCHIMICA ACTA,421,9.
MLA Ji, Xueqian,et al."Suppressing oxygen vacancies on the surface of Li-rich material as a high-energy cathode via high oxygen affinity Ca(0.95)Bi(0.05)MnO(3 )coating".ELECTROCHIMICA ACTA 421(2022):9.

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来源：过程工程研究所

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