Preparation of carbon encapsulated core-shell Fe@CoFe2O4 particles through the Kirkendall effect and application as advanced anode materials for lithium-ion batteries | |
Duan, Chaoyu1; Zhu, Fuliang1; Du, Mengqi1; Meng, Yanshuang1,3; Zhang, Yue2 | |
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. |
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