CAS OpenIR  > 研究所(批量导入)
Insights into the stable layered structure of a Li-rich cathode material for lithium-ion batteries
An, Juan1; Shi, Liyi1; Chen, Guorong1; Li, Musen1; Liu, Hongjiang1; Yuan, Shuai1; Chen, Shimou2; Zhang, Dengsong1
2017-10-07
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume5Issue:37Pages:19738-19744
Abstract

Li-rich layered metal oxides (LNMO) receive significant attention as cathode materials of lithium-ion batteries owing to their higher specific energy density and lower cost compared with current commercial cathode materials. However, the stability of the structure during the cycle becomes a fatal weakness. In order to reduce the collapse of the structure during the cycle, previous researchers usually use cationic doping means, but all reported works have ignored the adverse effects from the destruction of the oxide layers that damages the structural integrity of the materials. In this work, from the perspective of a stable oxygen layer structure, we first dope sulfur into the oxygen layers of a lithium-rich cathode material to improve the structural stability and cycling performance. The preliminary calculation results of VASP prove that a small amount of sulfur doping is beneficial to stabilize the crystal structure of the material and balance the energy of the embedding and deintercalation of lithium ions, which provides theoretical guidance for our study. Further electrochemical results show that the sulfur-doped lithium-rich material released a higher initial efficiency of 96%, a specific capacity of 293.3 mA h g(-1), and better cycling stability and rate performance (a capacity of 117 mA h g(-1) is maintained at a current density of 5C). This work provides a new manner of doping for developing Li-rich layered metal oxide cathode materials that evade structural change.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1039/c7ta05971j
Indexed BySCI
Language英语
WOS KeywordELECTROCHEMICAL PERFORMANCE ; OXIDE ELECTRODES ; HIGH-CAPACITY ; VOLTAGE FADE ; LI1.2NI0.2MN0.6O2 ; DEGRADATION ; CHALLENGES ; PARTICLES ; PRISTINE
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationState Key Research and Development Plan(2017YFB0102200) ; Shanghai Municipal Science and Technology Commission(15DZ1170100 ; Shanghai Municipal Education Commission (Peak Discipline Construction Program) ; 16JC1401700 ; 16DZ12043)
WOS IDWOS:000411739700022
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23243
Collection研究所(批量导入)
Affiliation1.Shanghai Univ, Res Ctr Nano Sci & Technol, Dept Chem, Shanghai 200444, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
An, Juan,Shi, Liyi,Chen, Guorong,et al. Insights into the stable layered structure of a Li-rich cathode material for lithium-ion batteries[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(37):19738-19744.
APA An, Juan.,Shi, Liyi.,Chen, Guorong.,Li, Musen.,Liu, Hongjiang.,...&Zhang, Dengsong.(2017).Insights into the stable layered structure of a Li-rich cathode material for lithium-ion batteries.JOURNAL OF MATERIALS CHEMISTRY A,5(37),19738-19744.
MLA An, Juan,et al."Insights into the stable layered structure of a Li-rich cathode material for lithium-ion batteries".JOURNAL OF MATERIALS CHEMISTRY A 5.37(2017):19738-19744.
Files in This Item:
File Name/Size DocType Version Access License
Insights into the st(1558KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[An, Juan]'s Articles
[Shi, Liyi]'s Articles
[Chen, Guorong]'s Articles
Baidu academic
Similar articles in Baidu academic
[An, Juan]'s Articles
[Shi, Liyi]'s Articles
[Chen, Guorong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[An, Juan]'s Articles
[Shi, Liyi]'s Articles
[Chen, Guorong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.