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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
Authors
Im, ME[Im, Mi Eun]Pham-Cong, D[De Pham-Cong]Kim, JY[Kim, Ji Yoon]Choi, HS[Choi, Hun Seok]Kim, JH[Kim, Jae Hyun]Kim, JP[Kim, Jong Pil]Kim, J[Kim, Jinwoo]Jeong, SY[Jeong, Se Young]Cho, CR[Cho, Chae Ryong]
DGIST Authors
Kim, JH[Kim, Jae Hyun]
Issue Date
2015-06-15
Citation
Journal of Power Sources, 284, 392-399
Type
Article
Article Type
Article
Keywords
Anode Material for Lithium Ion BatteriesAnodesCapacityCarbonCarbon CoatingDiffusionDiffusion CoatingsDiffusion CoefficientElectric BatteriesElectrochemical PerformanceElectrodesHigh-Performance AnodesHollow NanofiberHollow NanofibersIon Diffusion CoefficientIonsIron OxideIron OxidesLithiumLithium-Ion BatteriesLithium-Ion Battery AnodesLithium AlloysLithium BatteriesLithium CompoundsNanofibers
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
Files:
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Collection:
Smart Textile Convergence Research Group1. Journal Articles


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