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Issue 31, 2009
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Porous carbon nanofibers loaded with manganese oxide particles: Formation mechanism and electrochemical performance as energy-storage materials

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Abstract

Mn oxide-loaded porous carbon nanofibers are prepared by electrospinning polyacrylonitrile nanofibers containing different amounts of Mn(CH3COO)2, followed by thermal treatments in different environments. It is found that the manganese salt may transform into γ-Mn(OOH)2 or other Mn compounds during the thermal oxidation in air environment, while further thermal treatment in argon atmosphere results in MnO and Mn3O4 particles confined to a nanoporous carbon structure. Surface morphology, thermal properties and crystal structures are characterized using various analytical techniques to provide insight into the formation mechanism of the porous structure. These Mn oxide-loaded porous carbon composite nanofibers exhibit high reversible capacity, improved cycling performance, and elevated rate capability even at high current rates when used as anodes for rechargeable lithium-ion batteries without adding any polymer binder or electronic conductor.

Graphical abstract: Porous carbon nanofibers loaded with manganese oxide particles: Formation mechanism and electrochemical performance as energy-storage materials

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Article information


Submitted
23 Mar 2009
Accepted
15 May 2009
First published
19 Jun 2009

J. Mater. Chem., 2009,19, 5593-5601
Article type
Paper

Porous carbon nanofibers loaded with manganese oxide particles: Formation mechanism and electrochemical performance as energy-storage materials

L. Ji, A. J. Medford and X. Zhang, J. Mater. Chem., 2009, 19, 5593
DOI: 10.1039/B905755B

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