The influence of different Si:C ratios on the electrochemical performance of silicon/carbon layered film anodes for lithium-ion batteries

doi:10.1039/c7ra12027c

CORC > 兰州理工大学 > 兰州理工大学 > 理学院

	The influence of different Si:C ratios on the electrochemical performance of silicon/carbon layered film anodes for lithium-ion batteries
	Wang, Jun 1,3; Li, Shengli 1; Zhao, Yi 1; Shi, Juan 1; Lv, Lili 1; Wang, Huazhi 1; Zhang, Zhiya 1; Feng, Wangjun 2
刊名	RSC Advances
	2018
卷号	8 期号:12 页码:6660-6666
关键词	Anodes Copper Electric discharges Film preparation Multilayer films Multilayers Silicon Silicon batteries Electrochemical lithium storages Electrochemical performance High specific capacity Initial Coulombic efficiency Magnetron sputtering method Multi-layer thin film Silicon-based materials Specific capacities
ISSN号	2046-2069
DOI	10.1039/c7ra12027c
英文摘要	With a high specific capacity (4200 mA h g-1), silicon based materials have become the most promising anode materials in lithium-ions batteries. However, the large volume expansion makes the capacity reduce rapidly. In this work, a periodic silicon/carbon (Si/C) multilayer thin film was synthesized by magnetron sputtering method on copper foil. The titanium (Ti) film (about 20 nm) as the transition layer was deposited on the copper foil prior to the deposition of the multilayer film. Superior electrochemical lithium storage performance was obtained by the multilayer thin film. The initial discharge and charge specific capacity of the Si (15 nm)/C (5 nm) multilayer film anode are 2640 mA h g-1 and 2560 mA h g-1 with an initial coulombic efficiency of ∼97%. The retention specific capacity is about 2300 mA h g-1 and there is ∼87% capacity retention after 200 cycles. © 2018 The Royal Society of Chemistry.
资助项目	Open Project of Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University[LZUMMM2016012]
WOS研究方向	Chemistry
语种	英语
出版者	Royal Society of Chemistry
WOS记录号	WOS:000425034000056
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114586]
专题	理学院
通讯作者	Wang, Jun
作者单位	1.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China 2.LanZhou Univ Technol, Sch Sci, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou Inst Chem Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jun,Li, Shengli,Zhao, Yi,et al. The influence of different Si:C ratios on the electrochemical performance of silicon/carbon layered film anodes for lithium-ion batteries[J]. RSC Advances,2018,8(12):6660-6666.
APA	Wang, Jun.,Li, Shengli.,Zhao, Yi.,Shi, Juan.,Lv, Lili.,...&Feng, Wangjun.(2018).The influence of different Si:C ratios on the electrochemical performance of silicon/carbon layered film anodes for lithium-ion batteries.RSC Advances,8(12),6660-6666.
MLA	Wang, Jun,et al."The influence of different Si:C ratios on the electrochemical performance of silicon/carbon layered film anodes for lithium-ion batteries".RSC Advances 8.12(2018):6660-6666.