CNT@Fe3O4@C Coaxial Nanocables: One-Pot, Additive-Free Synthesis and Remarkable Lithium Storage Behavior
- Authors
- Cheng, Jianli; Wang, Bin; Park, Cheol-Min; Wu, Yuping; Huang, Hui; Nie, Fude
- Issue Date
- 22-Jul-2013
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- carbon; coaxial nanocables; electrochemistry; lithium-ion batteries; nanotubes
- Citation
- CHEMISTRY-A EUROPEAN JOURNAL, v.19, no.30, pp 9866 - 9874
- Pages
- 9
- Journal Title
- CHEMISTRY-A EUROPEAN JOURNAL
- Volume
- 19
- Number
- 30
- Start Page
- 9866
- End Page
- 9874
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/22410
- DOI
- 10.1002/chem.201300037
- ISSN
- 0947-6539
1521-3765
- Abstract
- By using carbon nanotubes (CNTs) as a shape template and glucose as a carbon precursor and structure-directing agent, CNT@Fe3O4@C porous core/sheath coaxial nanocables have been synthesized by a simple one-pot hydrothermal process. Neither a surfactant/ligand nor a CNT pretreatment is needed in the synthetic process. A possible growth mechanism governing the formation of this nanostructure is discussed. When used as an anode material of lithium-ion batteries, the CNT@Fe3O4@C nanocables show significantly enhanced cycling performance, high rate capability, and high Coulombic efficiency compared with pure Fe2O3 particles and Fe3O4/CNT composites. The CNT@Fe3O4@C nanocables deliver a reversible capacity of 1290mAhg(-1) after 80cycles at a current density of 200mAg(-1), and maintain a reversible capacity of 690mAhg(-1) after 200cycles at a current density of 2000mAg(-1). The improved lithium storage behavior can be attributed to the synergistic effect of the high electronic conductivity support and the inner CNT/outer carbon buffering matrix.
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