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Enhanced electrochemical performance of carbon-coated TiO2 nanobarbed fibers as anode material for lithium-ion batteries

Title
Enhanced electrochemical performance of carbon-coated TiO2 nanobarbed fibers as anode material for lithium-ion batteries
Authors
Pham-Cong, D[De Pham-Cong]Kim, JH[Kim, Jae-Hyun]Jeong, SY[Jeong, Se-Young]Choi, JH[Choi, Jun Hee]Kim, J[Kim, Jinwoo]Cho, CR[Cho, Chae-Ryong]
DGIST Authors
Kim, JH[Kim, Jae-Hyun]
Issue Date
2015-11
Citation
Electrochemistry Communications, 60, 204-207
Type
Article
Article Type
Article
Keywords
Amorphous CarbonAmorphous Carbon LayerAnodeAnode Material for Lithium Ion BatteriesAnodesCarbon-CoatingCarbon CoatingEffective ElectronsElectric BatteriesElectric DischargesElectrical ConductivityElectrochemical PerformanceElectrodesIonsLi-Ion BatteriesLithiumLithium-Ion BatteriesLithium AlloysLithium CompoundsLithium Ion DiffusionNano-StructuresNanorodsNanostructureReversible Capacity
ISSN
1388-2481
Abstract
We report the electrochemical performance of carbon-coated TiO2 nanobarbed fibers (TiO2@C NBFs) as anode material for lithium-ion batteries. The TiO2@C NBFs are composed of TiO2 nanorods grown on TiO2 nanofibers as a core, coated with a carbon shell. These nanostructures form a conductive network showing high capacity and C-rate performance due to fast lithium-ion diffusion and effective electron transfer. The TiO2@C NBFs show a specific reversible capacity of approximately 170 mAh g- 1 after 200 cycles at a 0.5 A g- 1 current density, and exhibit a discharge rate capability of 4 A g- 1 while retaining a capacity of about 70 mAh g- 1. The uniformly coated amorphous carbon layer plays an important role to improve the electrical conductivity during the lithiation-delithiation process. © 2015 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/2827
DOI
10.1016/j.elecom.2015.09.018
Publisher
Elsevier
Related Researcher
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Collection:
Smart Textile Convergence Research Group1. Journal Articles


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