Structural evolution of nickel-rich layered cathode material LiNi0.8Co0.1Mn0.1O2 at different current rates
Feng, Yaohua1,2; Xu, Hui1; Wang, Bo1,2; Tuo, Kuanyou1,2; Wang, Peng1; Wang, Shimin1; Liang, Wenbiao1; Lu, Hongli1; Li, Shiyou1,2,3
2021-02
发表期刊Ionics
ISSN09477047
卷号27期号:2页码:517-526
摘要

Ni-rich layered oxide LiNi0.8Co0.1Mn0.1O2 has received considerable attention in the research field. However, the structural transformation of Ni-rich material is different at different cycling rates, and investigating the evolution of its structures to further enhance the electrochemical properties of the material seems of great significance. Therefore, the structural evolution of LiNi0.8Co0.1Mn0.1O2 materials is analyzed at different cycling rates. Results display that LiNi0.8Co0.1Mn0.1O2 materials will produce diverse phases at different cycling rates. At low cycling rates, there are enough Li vacancies in the materials to facilitate the complete mixing of transition metals and Li+, which leads the LiNi0.8Co0.1Mn0.1O2 materials to evolve from a layered structure to a rock salt phase structure. At high rates, the lack of vacancies caused by the sluggish dynamics will lead to the evolution of Ni-rich materials from a layered structure to a spinel structure. The electrochemical performances further show that about 78.23% of the capacity is maintained after 300 cycles at low rate of 1 C, which is much higher than that of 65.76% at high rate of 2 C. The results show that, compared to high-rate charge and discharge, the excellent electrochemical performance of low-rate charge and discharge is because it is easier to form a stable rock salt phase layer on the surface of the material at low rates, which effectively maintains the integrity of particles and better maintain the lithium-ion transmission rate of LiNi0.8Co0.1Mn0.1O2. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

关键词Cathodes Cobalt compounds Electric discharges Manganese compounds Nickel oxide Salt deposits Transition metals Charge and discharge Electrochemical performance Layered cathode materials Layered Structures Research fields Spinel structure Structural evolution Structural transformation
DOI10.1007/s11581-020-03849-2
收录类别SCI ; SCIE ; EI
语种英语
WOS研究方向Chemistry ; Electrochemistry ; Physics
WOS类目Chemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
WOS记录号WOS:000592135200001
出版者Springer Science and Business Media Deutschland GmbH
EI入藏号20204809533478
EI主题词Lithium compounds
EI分类号505.1 Nonmetallic Mines - 531 Metallurgy and Metallography - 701.1 Electricity: Basic Concepts and Phenomena - 804.2 Inorganic Compounds
来源库Compendex
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/147163
专题石油化工学院
图书馆
通讯作者Li, Shiyou
作者单位1.Lanzhou Univ Technol, Coll Petrochem Technol, 36 Pengjiaping Rd, Lanzhou 730050, Gansu, Peoples R China;
2.Gansu Engn Lab Cathode Mat Lithium Ion Battery, Lanzhou 730050, Peoples R China;
3.Qinghai Green Grass New Energy Technol Co Ltd, Qinghai Res Ctr Low Temperature Lithium Ion Batte, Xining 810000, Peoples R China
第一作者单位石油化工学院
通讯作者单位石油化工学院
第一作者的第一单位石油化工学院
推荐引用方式
GB/T 7714
Feng, Yaohua,Xu, Hui,Wang, Bo,et al. Structural evolution of nickel-rich layered cathode material LiNi0.8Co0.1Mn0.1O2 at different current rates[J]. Ionics,2021,27(2):517-526.
APA Feng, Yaohua.,Xu, Hui.,Wang, Bo.,Tuo, Kuanyou.,Wang, Peng.,...&Li, Shiyou.(2021).Structural evolution of nickel-rich layered cathode material LiNi0.8Co0.1Mn0.1O2 at different current rates.Ionics,27(2),517-526.
MLA Feng, Yaohua,et al."Structural evolution of nickel-rich layered cathode material LiNi0.8Co0.1Mn0.1O2 at different current rates".Ionics 27.2(2021):517-526.
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