ICCAS OpenIR
Surface modification of graphite by ion implantation for promoting the electrochemical property in Li-ion batteries
Hai, Yang; Cui, Wei; Lin, Yemao; Han, Pei; Chen, Huaican; Zhu, Zhiyong; Li, Cuihua; Yang, Bo; Zhu, Caizhen; Xu, Jian
2019-08-01
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume484Pages:726-731
AbstractNowadays, graphite is still the commercial anode material for Li-ion batteries although many kinds of anode materials have been reported. A great deal of efforts has been devoting to improving the specific gravimetric capacity of graphite by doping or preparing hierarchical structure. However, the volumetric capacity of graphite is not taken seriously compared to the specific gravimetric capacity. In this paper, a surface modification method, ion implantation, has been put forward to improve the volumetric capacity of graphite with high coulombic efficiency. After modification with 50 keV N+ ions at 1 x 10(12) ions/cm(2), the volumetric capacity of implanted graphite increases 29.6% (696 mAh/cm(3)) compared to that of pure graphite electrode (537 mAh/cm(3)) with a super-high initial coulombic efficiency of similar to 95.9%. Moreover, the influence of nitrogen doping and vacancies induced by N+ ions implantation on the improving of volumetric capacity is discussed. The implanted effects of graphite are also observed by HRTEM, GIXRD, Raman and XPS.
DOI10.1016/j.apsusc.2019.04.081
Indexed BySCI
Language英语
WOS IDWOS:000471830700080
EI Accession Number1873-5584
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82712
Collection中国科学院化学研究所
AffiliationChinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Hai, Yang,Cui, Wei,Lin, Yemao,et al. Surface modification of graphite by ion implantation for promoting the electrochemical property in Li-ion batteries[J]. APPLIED SURFACE SCIENCE,2019,484:726-731.
APA Hai, Yang.,Cui, Wei.,Lin, Yemao.,Han, Pei.,Chen, Huaican.,...&Xu, Jian.(2019).Surface modification of graphite by ion implantation for promoting the electrochemical property in Li-ion batteries.APPLIED SURFACE SCIENCE,484,726-731.
MLA Hai, Yang,et al."Surface modification of graphite by ion implantation for promoting the electrochemical property in Li-ion batteries".APPLIED SURFACE SCIENCE 484(2019):726-731.
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