Insights into the improved cycle and rate performance by ex-situ F and in-situ Mg dual doping of layered oxide cathodes for sodium-ion batteries

doi:10.1016/j.ensm.2021.11.016

IR > 石油化工学院

	Insights into the improved cycle and rate performance by ex-situ F and in-situ Mg dual doping of layered oxide cathodes for sodium-ion batteries
	Cui, Xiaoling1,3 ; Wang, Shimin 1,3; Ye, Xiushen 2; Fan, Xiaoqi 1; Gao, Cankun 1; Quan, Yin 1; Wen, Shuxiang 1; Cai, Xingpeng 1; Huang, Jin 1; Li, Shiyou1,3,4
	2022-03
发表期刊	Energy Storage Materials
ISSN	2405-8297
卷号	45 页码:1153-1164
摘要	P2 phase layered manganese-based transition metal (TM) oxides have been extensively studied as cathode materials in Sodium ion batteries (SIBs). Herein, ex-situ F-doping P2-type layered Na0.67Ni0.15Fe0.2Mn0.65F0.05O1.95 (NFMF-005) is synthesized firstly by coprecipitation to reduce the capacity fading caused by irreversible phase transition and Jahn-Teller effect. Because the bond energy of O[sbnd]O and TM-O are changed owing to O sites are occupied by F, leading to the decrease of the interatomic distance of TM and the increase of the interlayer spacing, NFMF-005 can provide wider ion transport channel and suppress structural deformation. To inhibit phase transition completely and mitigate the slide of TM layers, in-situ Mg-doping is secondly carried out by electrochemical method after F-doping of NFMF-005. The obtained Mg-doping P2-type NM-NFMF005 possesses outstanding electrochemical performance, delivering the specific capacity of 229 mAh g−1, the capacity retention of 87.7% after 50 cycles and discharge specific capacity of 100 mAh g−1 at 10 C. Mg-Mg dimers are used to explain its superior performance, which exhibit pillar effect not only to stretch the interlayer space, but also to enhance the mechanical strength and improve structure stability. All the results illustrate that the double-doping of F and Mg can play synergistic role to promote the performance of SIBs. This work is promising to further expand strategies and areas of materials doping. This new electrochemical doping method will also provide guidance for the rational design of SIBs layered cathode materials. © 2021 Elsevier B.V.
关键词	Binary alloys Cathodes Chemical bonds Electric discharges Iron compounds Magnesium compounds Metal ions Nickel compounds Phosphorus compounds Sodium compounds Transition metals Double doping Ex situ F-doping In-situ doping In-situ mg Layered oxides Manganese-based layered oxide Mg-doping P2 phase Performance
DOI	10.1016/j.ensm.2021.11.016
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000781899500010
出版者	Elsevier B.V.
EI入藏号	20214711195109
EI主题词	Sodium-ion batteries
EI分类号	531 Metallurgy and Metallography ; 531.1 Metallurgy ; 701.1 Electricity: Basic Concepts and Phenomena ; 702.1.2 Secondary Batteries ; 801.4 Physical Chemistry
来源库	WOS
引用统计	被引频次：34[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/157862
专题	石油化工学院
通讯作者	Li, Shiyou
作者单位	1.Lanzhou Univ Technol, Sch Petrochem Technol, 36 Pengjiaping Rd, Lanzhou 730050, Gansu, Peoples R China; 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Qinghai Prov Key Lab Resources & Chem Salt Lakes, Xining 810008, Peoples R China; 3.Key Lab Low carbon Energy & Chem Ind Gansu Prov, Lanzhou 730050, Peoples R China; 4.Gansu Engn Lab Cathode Mat Lithium ion Battery, Baiyin 730900, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Cui, Xiaoling,Wang, Shimin,Ye, Xiushen,et al. Insights into the improved cycle and rate performance by ex-situ F and in-situ Mg dual doping of layered oxide cathodes for sodium-ion batteries[J]. Energy Storage Materials,2022,45:1153-1164.
APA	Cui, Xiaoling.,Wang, Shimin.,Ye, Xiushen.,Fan, Xiaoqi.,Gao, Cankun.,...&Li, Shiyou.(2022).Insights into the improved cycle and rate performance by ex-situ F and in-situ Mg dual doping of layered oxide cathodes for sodium-ion batteries.Energy Storage Materials,45,1153-1164.
MLA	Cui, Xiaoling,et al."Insights into the improved cycle and rate performance by ex-situ F and in-situ Mg dual doping of layered oxide cathodes for sodium-ion batteries".Energy Storage Materials 45(2022):1153-1164.