Preparation of carbon encapsulated core-shell Fe@CoFe2O4 particles through the Kirkendall effect and application as advanced anode materials for lithium-ion batteries

doi:10.1016/j.jelechem.2019.01.012

	Preparation of carbon encapsulated core-shell Fe@CoFe2O4 particles through the Kirkendall effect and application as advanced anode materials for lithium-ion batteries
	Duan, Chaoyu 1; Zhu, Fuliang 1; Du, Mengqi 1; Meng, Yanshuang 1,3; Zhang, Yue 2
刊名	JOURNAL OF ELECTROANALYTICAL CHEMISTRY
	2019-02-15
卷号	835 页码:22-29
关键词	Fe CoFe2O4 Carbon Core-shell Lithium ion batteries
ISSN号	1572-6657
DOI	10.1016/j.jelechem.2019.01.012
英文摘要	Carbon encapsulated core-shell Fe@CoFe2O4 nanoparticles (Fe@CoFe2O4@C) are produced by using Kirkendall effect method and used as the anode material for lithium-ion batteries. During the discharge process, Fe and Co particles are synthesized at the shell of the nanoparticles and are pulverized to smaller grains in the low potential regions. These pulverized particles not only increase the contact area between electrolyte and active materials, but also shortens the transfer distance of Li+ and electron, leading to an enhanced capacity. In addition, the structure stability and electrical conductivity of CoFe2O4 (CFO) shell are improved by the thin carbon layer coated on the surface of the shell. Due to this special structure, the Fe@CoFe2O4@C electrode exhibits excellent cycle performance, delivering a capacity of 1911 mA h g(-1) after 500 cycles at 0.3 C (1 C = 1000 mA g(-1)). It also shows superior rate capacities of 760.8, 735.6, 672.2, and 596.5 mA h g(-1) at the current densities of 1.0, 2.0, 5.0, and 10.0 C, respectively.
资助项目	Foundation for Innovation Groups of Basic Research in Gansu Province[1606RJIA322]
WOS研究方向	Chemistry ; Electrochemistry
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000458943900003
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32094]
专题	材料科学与工程学院
通讯作者	Zhu, Fuliang; Meng, Yanshuang; Zhang, Yue
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China 2.Georgia Southern Univ, Dept Mfg Engn, Statesboro, GA 30458 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	Duan, Chaoyu,Zhu, Fuliang,Du, Mengqi,et al. Preparation of carbon encapsulated core-shell Fe@CoFe2O4 particles through the Kirkendall effect and application as advanced anode materials for lithium-ion batteries[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY,2019,835:22-29.
APA	Duan, Chaoyu,Zhu, Fuliang,Du, Mengqi,Meng, Yanshuang,&Zhang, Yue.(2019).Preparation of carbon encapsulated core-shell Fe@CoFe2O4 particles through the Kirkendall effect and application as advanced anode materials for lithium-ion batteries.JOURNAL OF ELECTROANALYTICAL CHEMISTRY,835,22-29.
MLA	Duan, Chaoyu,et al."Preparation of carbon encapsulated core-shell Fe@CoFe2O4 particles through the Kirkendall effect and application as advanced anode materials for lithium-ion batteries".JOURNAL OF ELECTROANALYTICAL CHEMISTRY 835(2019):22-29.