Facile synthesis of the sandwich-structured germanium/reduced graphene oxide hybrid: an advanced anode material for high-performance lithium ion batteries

doi:10.1039/c7ta03087h

	Facile synthesis of the sandwich-structured germanium/reduced graphene oxide hybrid: an advanced anode material for high-performance lithium ion batteries
	Wang, Bangrun 1,2; Jin, Jun 1; Hong, Xiaoheng1,3 ; Gu, Sui 1,2; Guo, Jing 1,2; Wen, Zhaoyin1
	2017-07-14
发表期刊	JOURNAL OF MATERIALS CHEMISTRY A (IF:10.7[JCR-2023],10.8[5-Year])
ISSN	2050-7488
卷号	5 期号:26 页码:13430-13438
发表状态	已发表
DOI	10.1039/c7ta03087h
摘要	A sandwich-structured reduced graphene oxide/germanium/reduced graphene oxide hybrid (denoted as rGO/Ge/rGO) is successfully synthesized through a facile thermal reduction method for the first time. The rGO/Ge/rGO hybrid, with submicron Ge crystals (200-600 nm) uniformly encapsulated in a conductive rGO matrix, offers several favorable features: enough void space to accommodate the volume change, fast electrons and lithium ions transport, and superior structural stability. When acting as the anode in lithium ion batteries (LIBs), rGO/Ge/rGO exhibits significantly improved electrochemical performance compared to that of pure Ge, owing to the sufficient wrapping of Ge by rGO and strong chemical interaction between Ge and rGO. Enhanced reversible specific capacity of 1085 mA hg(-1) after 500 cycles can be achieved at 1C rate (1C = 1600 mA g(-1)) with the capacity loss of similar to 0.017% per cycle. Furthermore, the coin-type full cell composed of the rGO/Ge/rGO anode and the LiNi0.5Co0.2Mn0.3O2 cathode delivers a high specific capacity of 940 mA h g(-1) with a capacity retention of 93.6% after 100 cycles at 1C rate. Such a sandwich-type rGO/Ge/rGO hybrid, which presents excellent cycle life and remarkably high capacity, is expected to be a promising anode material candidate for further application in next-generation high energy density LIBs and other electrochemical devices.
收录类别	SCI ; EI
语种	英语
资助项目	Science and Technology Commission of Shanghai Municipality[14JC1493000]
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000404618200017
出版者	ROYAL SOC CHEMISTRY
EI入藏号	20172803928054
EI主题词	Anodes ; Electric batteries ; Electrodes ; Germanium ; Graphene ; Ions ; Lithium ; Lithium compounds ; Secondary batteries ; Stability
EI分类号	Alkali Metals:549.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Electric Batteries:702.1 ; Secondary Batteries:702.1.2 ; Electron Tubes:714.1 ; Nanotechnology:761 ; Chemical Products Generally:804
WOS关键词	HIGH-CAPACITY ; NANOTUBE ARRAYS ; DOPED CARBON ; GE ; NANOPARTICLES ; COMPOSITE ; NANOCOMPOSITES ; PARTICLES ; NANOWIRES ; NANOSTRUCTURES
原始文献类型	Article
通讯作者	Wen, Zhaoyin
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/2784
专题	物质科学与技术学院物质科学与技术学院_特聘教授组_温兆银组物质科学与技术学院_硕士生
通讯作者	Wen, Zhaoyin
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shanghaitech Univ, Shanghai 200031, Peoples R China
推荐引用方式 GB/T 7714	Wang, Bangrun,Jin, Jun,Hong, Xiaoheng,et al. Facile synthesis of the sandwich-structured germanium/reduced graphene oxide hybrid: an advanced anode material for high-performance lithium ion batteries[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(26):13430-13438.
APA	Wang, Bangrun,Jin, Jun,Hong, Xiaoheng,Gu, Sui,Guo, Jing,&Wen, Zhaoyin.(2017).Facile synthesis of the sandwich-structured germanium/reduced graphene oxide hybrid: an advanced anode material for high-performance lithium ion batteries.JOURNAL OF MATERIALS CHEMISTRY A,5(26),13430-13438.
MLA	Wang, Bangrun,et al."Facile synthesis of the sandwich-structured germanium/reduced graphene oxide hybrid: an advanced anode material for high-performance lithium ion batteries".JOURNAL OF MATERIALS CHEMISTRY A 5.26(2017):13430-13438.