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
发表期刊JOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
卷号5期号:37页码:19738-19744
摘要

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.

文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1039/c7ta05971j
收录类别SCI
语种英语
关键词[WOS]ELECTROCHEMICAL PERFORMANCE ; OXIDE ELECTRODES ; HIGH-CAPACITY ; VOLTAGE FADE ; LI1.2NI0.2MN0.6O2 ; DEGRADATION ; CHALLENGES ; PARTICLES ; PRISTINE
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
WOS类目Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
项目资助者State Key Research and Development Plan(2017YFB0102200) ; Shanghai Municipal Science and Technology Commission(15DZ1170100 ; Shanghai Municipal Education Commission (Peak Discipline Construction Program) ; 16JC1401700 ; 16DZ12043)
WOS记录号WOS:000411739700022
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23243
专题研究所(批量导入)
作者单位1.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
推荐引用方式
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.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Insights into the st(1558KB)期刊论文出版稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[An, Juan]的文章
[Shi, Liyi]的文章
[Chen, Guorong]的文章
百度学术
百度学术中相似的文章
[An, Juan]的文章
[Shi, Liyi]的文章
[Chen, Guorong]的文章
必应学术
必应学术中相似的文章
[An, Juan]的文章
[Shi, Liyi]的文章
[Chen, Guorong]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Insights into the stable layered structure of a Li-rich cathode material for lithium-ion batteries.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。