Reduced graphene oxide@nitrogen doped carbon with enhanced electrochemical performance in lithium ion batteries

doi:10.1016/j.electacta.2019.04.068

	Reduced graphene oxide@nitrogen doped carbon with enhanced electrochemical performance in lithium ion batteries
	Meng, Yanshuang 1,3; Liu, Xinlian 1; Xiao, Mingjun 1; Hu, Qianru 1; Li, Yuzhu 1; Li, Ruinian 1; Ke, Xinyou 2; Ren, Guofeng 2; Zhu, Fuliang 1,3
刊名	ELECTROCHIMICA ACTA
	2019-06-20
卷号	309 页码:228-233
关键词	Reduced graphene oxide Nitrogen-doped carbon Graphene composite Lithium ion batteries
ISSN号	0013-4686
DOI	10.1016/j.electacta.2019.04.068
英文摘要	Reduced graphene oxide (rGO) has attracted wide attention as anode materials of lithium ion batteries, however, restacking of rGO sheets limits its capacity and rate performance. To address this issue, a sandwich-like composite of N-doped carbon (NDC) and rGO (rGO@NDC) was fabricated via a process of absorbing [EMIm]N(CN)(2) ionic liquid on the surface of graphene oxide (GO) nanosheets and subsequent heat-treating of the composite. The rGO@NDC composite exhibits a high specific capacity of 409.4 mAh g(-1) with a Coulombic efficiency of 100% after 50 cycles at a charge-discharge rate of 0.5 C, and a specific capacity of 222.8 mAh g(-1) with no capacity fade after 1200 cycles at charge-discharge rate of 10 C. Compositing the rGO with NDC particles can decrease the superficial oxygen-containing functional groups of the rGO, and therefore decrease side reactions during battery cycling. And embedding of NDC particles on the surface of rGO sheets avoids the restacking of rGO sheets and enlarges the interlayer space of the rGO to facilitate Li+ transport within the rGO@NDC. Finally, the NDC particles provide more accessible sites for Li+ and rGO sheets as conductivity networks improves electron transport. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	Foundation for Innovation Groups of Basic Research in Gansu Province[1606RJIA322]
WOS研究方向	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000466714300023
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31791]
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
推荐引用方式 GB/T 7714	Meng, Yanshuang,Liu, Xinlian,Xiao, Mingjun,et al. Reduced graphene oxide@nitrogen doped carbon with enhanced electrochemical performance in lithium ion batteries[J]. ELECTROCHIMICA ACTA,2019,309:228-233.
APA	Meng, Yanshuang.,Liu, Xinlian.,Xiao, Mingjun.,Hu, Qianru.,Li, Yuzhu.,...&Zhu, Fuliang.(2019).Reduced graphene oxide@nitrogen doped carbon with enhanced electrochemical performance in lithium ion batteries.ELECTROCHIMICA ACTA,309,228-233.
MLA	Meng, Yanshuang,et al."Reduced graphene oxide@nitrogen doped carbon with enhanced electrochemical performance in lithium ion batteries".ELECTROCHIMICA ACTA 309(2019):228-233.