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Enhanced electrochemical performance of template-free carbon-coated iron(II, III) oxide hollow nanofibers as anode material for lithium-ion batteries

Title
Enhanced electrochemical performance of template-free carbon-coated iron(II, III) oxide hollow nanofibers as anode material for lithium-ion batteries
Author(s)
Im, Mi EunDe Pham-CongKim, Ji YoonChoi, Hun SeokKim, Jae HyunKim, Jong PilKim, JinwooJeong, Se YoungCho, Chae Ryong
Issued Date
2015-06-15
Citation
Journal of Power Sources, v.284, pp.392 - 399
Type
Article
Author Keywords
Iron oxideHollow nanofiberCarbon coatingCapacityDiffusion coefficient
Keywords
ALPHA-FE2O3 NANORODSAnode Material For Lithium Ion BatteriesAnodesCAPACITYCarbonCarbon CoatingCOMPOSITEDiffusionDiffusion CoatingsDiffusion CoefficientElectric BatteriesElectrochemical PerformanceElectrodesENERGY-STORAGEFE3O4 NANOPARTICLESFOAMHigh-Performance AnodesHollow NanofiberHollow NanofibersIon Diffusion CoefficientIonsIron OxideIron OxidesLithiumLithium-Ion BatteriesLithium-Ion Battery AnodesLithium AlloysLithium BatteriesLithium CompoundsNANOCRYSTALSNanofibersNANOTUBESONE-POT SYNTHESISSPHERESTHIN-FILMS
ISSN
0378-7753
Abstract
Carbon-coated Fe3O4 hollow nanofibers (Fe3O4/C hNFs) as a lithium ion battery anode material are prepared through electrospinning, annealing, and hydrothermal processing. At a high current density of 1000 mAg-1, the template-free Fe3O4/C hNFs exhibit high 1st- and 150th-cycle specific capacities of ∼963 and 978 mAhg-1, respectively. Moreover, Fe3O4/C hNFs have excellent and stable rate capability, compared to that of the Fe3O4 hNFs, and a capacity of 704 mAhg-1 at a current density of 2000 mAg-1. Owing to the carbon layer, the Li-ion diffusion coefficient of the Fe3O4/C hNFs, 8.10 × 10-14 cm2 s-1, is 60 times higher than that (1.33 × 10-15 cm2 s-1) of the Fe3O4 hNFs. These results indicate that Fe3O4/C hNFs may have important implications for developing high performance anodes for next-generation lithium ion batteries. © 2015 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2890
DOI
10.1016/j.jpowsour.2015.03.024
Publisher
Elsevier B.V.
Related Researcher
  • 김재현 Kim, Jae Hyun
  • Research Interests 에너지; 배터리; 고체전해질; 태양전지; 전기차; 리튬이온배터리
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Division of Energy & Environmental Technology 1. Journal Articles

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