Mesoporous CoFe2O4 nanospheres cross-linked by carbon nanotubes as high-performance anodes for lithium-ion batteries

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	Mesoporous CoFe2O4 nanospheres cross-linked by carbon nanotubes as high-performance anodes for lithium-ion batteries
	Zhang, Zailei 1; Wang, Yanhong 1; Zhang, Meiju 1; Tan, Qiangqiang 1; Lv, Xiao 1; Zhong, Ziyi 2; Su, Fabing 1
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2013
卷号	1 期号:25 页码:7444-7450
英文摘要	We report the synthesis and characterization of mesoporous cobalt ferrite (CoFe2O4, named CFO) nanospheres cross-linked by carbon nanotubes (CNTs) as anode nanocomposites (CFO/CNT) for Li-ion batteries. CFO/CNT nanocomposites were synthesized by a facile one-pot solvothermal method using Co(CH3COO)(2) and FeCl3 as the metal precursors in the presence of CH3COOK, CH3COOC2H5, HOCH2CH2OH, and CNTs. The obtained samples were characterized by X-ray diffraction, thermogravimetric analysis, nitrogen adsorption, transmission electron microscopy, and scanning electron microscopy. It is found that most CFO nanospheres are interconnected with CNTs forming a network composite possibly due to the presence of defects at the open ends and on the external surface of CNTs. These defects may act as nucleation centers for growth of CFO nanospheres. Compared with the bare CFO nanospheres and the physically mixed CFO nanospheres with CNTs, the CFO/CNT composite containing 16.5 wt% CNTs shows much higher capacities of 1137.6, 1003.4, 867.3, and 621.7 mA h g(-1) at the current densities of 200, 500, 1000, and 2000 mA g(-1) after 10 charge-discharge cycles, respectively, and even after 100 cycles, it still maintains a high capacity of 1045.6 mA h g(-1) at 200 mA g(-1). The super electrochemical properties of the CFO/CNT composite should originate from the formed network structure with the intimate interconnection between CFO nanospheres and CNTs, which not only provides stable electrical and ionic transfer channels but also significantly shortens the diffusion length of the Li+ ions. This work opens a new way for fabrication and utilization of metal oxide-CNT composites as anode materials for Li-ion batteries.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
研究领域[WOS]	Chemistry ; Energy & Fuels ; Materials Science
关键词[WOS]	MAGNETIC-PROPERTIES ; CNT BACKBONE ; THIN-FILMS ; ELECTROCHEMICAL PERFORMANCE ; STORAGE CAPABILITY ; FACILE SYNTHESIS ; CAPACITY ; NANOSHEETS ; NANOCOMPOSITES ; MICROSPHERES
收录类别	SCI
语种	英语
WOS记录号	WOS:000319886500020
公开日期	2015-05-27
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/13462]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.ASTAR, Inst Chem Engn & Sci, Singapore 627833, Singapore
推荐引用方式 GB/T 7714	Zhang, Zailei,Wang, Yanhong,Zhang, Meiju,et al. Mesoporous CoFe2O4 nanospheres cross-linked by carbon nanotubes as high-performance anodes for lithium-ion batteries[J]. JOURNAL OF MATERIALS CHEMISTRY A,2013,1(25):7444-7450.
APA	Zhang, Zailei.,Wang, Yanhong.,Zhang, Meiju.,Tan, Qiangqiang.,Lv, Xiao.,...&Su, Fabing.(2013).Mesoporous CoFe2O4 nanospheres cross-linked by carbon nanotubes as high-performance anodes for lithium-ion batteries.JOURNAL OF MATERIALS CHEMISTRY A,1(25),7444-7450.
MLA	Zhang, Zailei,et al."Mesoporous CoFe2O4 nanospheres cross-linked by carbon nanotubes as high-performance anodes for lithium-ion batteries".JOURNAL OF MATERIALS CHEMISTRY A 1.25(2013):7444-7450.