Institutional Repository of Coll Mat Sci & Engn
F-doped LiFePO4@N/B/F-doped carbon as high performance cathode materials for Li-ion batteries | |
Meng, Yanshuang1,3; Li, Yuzhu1; Xia, Jun1; Hu, Qianru1; Ke, Xinyou2; Ren, Guofeng2; Zhu, Fuliang1,3 | |
2019-05-15 | |
发表期刊 | APPLIED SURFACE SCIENCE |
ISSN | 0169-4332 |
卷号 | 476页码:761-768 |
摘要 | LiFePO4 (LFP) is widely considered as a practical cathode material for lithium ion batteries, however its applications are still plagued by the low ionic and electronic conductivities. To address this challenge, F-doped LFP coated with N, B, F ternary doped carbon layer (F-LFP@NBFC) was synthesized by hydrothermal method using ionic liquid [BMIM]BF4 as the sole source for C, N, B and F. The F-LFP@NBFC exhibits superior electrochemical performance compared with the pristine LFP. F-LFP@NBFC demonstrates a discharge capacity of 162.2 mAh g(-1) at 0.1 C, which is close to its theoretical capacity, and maintains a 100% of discharge capacity after 40 cycles at 0.1 C. F-LFP@NBFC also shows an excellent rate capability and delivers a discharge capacity of 71.3 mAh g(-1) at 15 C. The excellent performance is ascribed to the surface coating of LFP and heteroatom doping into the carbon and LFP. On one hand, the N, B, F ternary doped carbon film acts as conducive network for LFP particles, improves the electronic conductivity of electrode particle and consequently enhances the Li+/Li-0 reduced/oxidized kinetics. On the other hand, the crystal lattice of LFP is enlarged by the F doping, which facilitates the Li+ intercalation/deintercalation. This study provides a convenient approach to prepare a high performance cathode material for lithium ion batteries. |
关键词 | F-doped LiFePO4 N, B, F-doped carbon Ionic liquids Electrode modification Lithium-ion batteries |
DOI | 10.1016/j.apsusc.2019.01.139 |
收录类别 | SCI ; SCIE |
语种 | 英语 |
资助项目 | Foundation for Innovation Groups of Basic Research in Gansu Province[1606RJIA322] |
WOS研究方向 | Chemistry ; Materials Science ; Physics |
WOS类目 | Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter |
WOS记录号 | WOS:000459458600092 |
出版者 | ELSEVIER SCIENCE BV |
EI入藏号 | 20190506434966 |
EI主题词 | Lithium-ion batteries |
EI分类号 | 701.1 Electricity: Basic Concepts and Phenomena - 712.1 Semiconducting Materials - 804 Chemical Products Generally - 813.2 Coating Materials |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/31863 |
专题 | 材料科学与工程学院 |
通讯作者 | Ren, Guofeng; Zhu, Fuliang |
作者单位 | 1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China; 2.Case Western Reserve Univ, Dept Mech & Aerosp Engn, Cleveland, OH 44106 USA; 3.State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China |
第一作者单位 | 材料科学与工程学院 |
通讯作者单位 | 材料科学与工程学院 |
第一作者的第一单位 | 材料科学与工程学院 |
推荐引用方式 GB/T 7714 | Meng, Yanshuang,Li, Yuzhu,Xia, Jun,et al. F-doped LiFePO4@N/B/F-doped carbon as high performance cathode materials for Li-ion batteries[J]. APPLIED SURFACE SCIENCE,2019,476:761-768. |
APA | Meng, Yanshuang.,Li, Yuzhu.,Xia, Jun.,Hu, Qianru.,Ke, Xinyou.,...&Zhu, Fuliang.(2019).F-doped LiFePO4@N/B/F-doped carbon as high performance cathode materials for Li-ion batteries.APPLIED SURFACE SCIENCE,476,761-768. |
MLA | Meng, Yanshuang,et al."F-doped LiFePO4@N/B/F-doped carbon as high performance cathode materials for Li-ion batteries".APPLIED SURFACE SCIENCE 476(2019):761-768. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Meng-2019-F-doped Li(2612KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
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。
修改评论