A novel strategy to prepare Ge@C/rGO hybrids as high-rate anode materials for lithium ion batteries

doi:10.1016/j.jpowsour.2016.12.091

	A novel strategy to prepare Ge@C/rGO hybrids as high-rate anode materials for lithium ion batteries
	Wang, Bangrun 1,2; Wen, Zhaoyin 1; Jin, Jun 1; Hong, Xiaoheng1,3 ; Zhang, Sanpei 1,2; Rui, Kun 1,2
	2017-02-28
发表期刊	JOURNAL OF POWER SOURCES (IF:8.1[JCR-2023],8.3[5-Year])
ISSN	0378-7753
卷号	342 页码:521-528
发表状态	已发表
DOI	10.1016/j.jpowsour.2016.12.091
摘要	Germanium is considered as a promising anode material for lithium ion batteries (LIBs) due to its high capacity. However, owing to the huge volume variation during cycling, the batteries based on germanium anodes usually show poor cyclability and inferior rate capability. Herein, we demonstrated a novel strategy to uniformly anchor the core-shell structured germanium@carbon (Ge@C) on the reduced graphene oxide (rGO) nanosheets by the strong adhesion of dopamine. In the resulting Ge@C/rGO hybrid, the amorphous carbon layer and rGO nanosheets can effectively reduce the agglomeration of germanium and provide buffer matrix for the volume change in electrochemical lithium reactions. When used as anode materials for LIBs, Ge@C/rGO hybrids deliver a reversible capacity of 1074.4 mA h g(-1) at 2C after 600 cycles (with capacity retention of 96.5%) and high rate capability of 436 mA h g-1 at 20C after 200 cycles. The encouraging electrochemical performance clearly demonstrates that Ge@C/rGO hybrids could be a potential anode material with high capacity, excellent rate capability, and good cycling stability for LIBs. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Lithium-ion battery Germanium anode Double carbon protection Strong adhesion Dopamine
收录类别	SCI ; EI
语种	英语
资助项目	Science and Technology Commission of Shanghai Municipality[14JC1493000] ; Science and Technology Commission of Shanghai Municipality[15DZ2281200]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000396186300059
出版者	ELSEVIER SCIENCE BV
EI入藏号	20170103217513
EI主题词	Adhesion ; Amines ; Amorphous carbon ; Anodes ; Electric batteries ; Electrodes ; Germanium ; Graphene ; Ions ; Lithium ; Lithium alloys ; Lithium compounds ; Nanosheets ; Neurophysiology ; Secondary batteries
EI分类号	Medicine and Pharmacology:461.6 ; 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 ; Organic Compounds:804.1 ; Solid State Physics:933 ; Amorphous Solids:933.2 ; Materials Science:951
WOS关键词	HIGH-PERFORMANCE ANODE ; NITROGEN-DOPED CARBON ; HIGH-CAPACITY ANODES ; GRAPHENE NANOCOMPOSITES ; GERMANIUM ; ELECTRODES ; NANOPARTICLES ; COMPOSITES ; NANOSHEETS
原始文献类型	Article
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/1498
专题	物质科学与技术学院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.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Shanghaitech Univ, Shanghai 200031, Peoples R China
推荐引用方式 GB/T 7714	Wang, Bangrun,Wen, Zhaoyin,Jin, Jun,et al. A novel strategy to prepare Ge@C/rGO hybrids as high-rate anode materials for lithium ion batteries[J]. JOURNAL OF POWER SOURCES,2017,342:521-528.
APA	Wang, Bangrun,Wen, Zhaoyin,Jin, Jun,Hong, Xiaoheng,Zhang, Sanpei,&Rui, Kun.(2017).A novel strategy to prepare Ge@C/rGO hybrids as high-rate anode materials for lithium ion batteries.JOURNAL OF POWER SOURCES,342,521-528.
MLA	Wang, Bangrun,et al."A novel strategy to prepare Ge@C/rGO hybrids as high-rate anode materials for lithium ion batteries".JOURNAL OF POWER SOURCES 342(2017):521-528.