Reduced Graphene Oxide/Marcasite-Type Cobalt Selenide Nanocrystals as an Anode for Lithium-Ion Batteries with Excellent Cyclic Performance

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	Reduced Graphene Oxide/Marcasite-Type Cobalt Selenide Nanocrystals as an Anode for Lithium-Ion Batteries with Excellent Cyclic Performance
	Li ZP(李章朋)1,2; Xue HT(薛宏涛)2; Wang JQ(王金清)1 ; Tang YB(唐永炳)2; Lee, Chun-Sing 2; Yang SR(杨生荣)1
刊名	ChemElectroChem
	2015
卷号	2 期号:11 页码:1682-1686
关键词	anode materials cobalt selenide composites graphene lithium-ion batteries
ISSN号	2196-0216
通讯作者	王金清 ; Lee, Chun-Sing
英文摘要	We report a graphene/cobalt selenide (rGO/CoSe₂) composite as an anode material for lithium-ion batteries. The prepared composite shows a wrinkled morphology with the CoSe₂ nanoparticles tightly anchored/wrapped on/in the rGO sheets. The rGO/CoSe₂ composite exhibits enhanced electrochemical performance with higher capacity, better rate capability, and cycling performance compared to pure CoSe₂. The rGO/CoSe₂ composite delivers a high initial reversible capacity of 726 mAhg^-1 and a very high capacity of 1577 mAhg^-1 after 200 cycles at a current density of 200 mAg^-1 (0.38C). The rGO sheets in the composite play important roles for the improvement in electrochemical properties, for example, the rGO sheet not only enhances the electrical conductivity of the whole electrode, but also alleviates the structure degradation caused by volume expansion of CoSe₂ during discharge/charge processes, resulting in improved lithium-storage performances.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Natural Science Foundation of China (Grant Nos. 51075384;51205385)
语种	英语
WOS记录号	WOS:000364707700008
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/18876]
专题	兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.City Univ Hong Kong, Dept Phys & Mat Sci, Ctr Super Diamond & Adv Films COSDAF, Kowloon, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Li ZP,Xue HT,Wang JQ,et al. Reduced Graphene Oxide/Marcasite-Type Cobalt Selenide Nanocrystals as an Anode for Lithium-Ion Batteries with Excellent Cyclic Performance[J]. ChemElectroChem,2015,2(11):1682-1686.
APA	Li ZP,Xue HT,Wang JQ,Tang YB,Lee, Chun-Sing,&Yang SR.(2015).Reduced Graphene Oxide/Marcasite-Type Cobalt Selenide Nanocrystals as an Anode for Lithium-Ion Batteries with Excellent Cyclic Performance.ChemElectroChem,2(11),1682-1686.
MLA	Li ZP,et al."Reduced Graphene Oxide/Marcasite-Type Cobalt Selenide Nanocrystals as an Anode for Lithium-Ion Batteries with Excellent Cyclic Performance".ChemElectroChem 2.11(2015):1682-1686.