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Issue 15, 2017
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Well-ordered mesoporous Fe2O3/C composites as high performance anode materials for sodium-ion batteries

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Abstract

Sodium-ion batteries have attracted considerable attention in recent years. In order to promote the practical application of sodium-ion batteries, the electrochemical performances, such as specific capacity, reversibility, and rate capability of the anode materials, should be further improved. In this work, a Fe2O3/C composite with a well-ordered mesoporous structure is prepared via a facile co-impregnation method by using mesoporous silica SBA-15 as a hard template. When used as an anode material for sodium-ion batteries, the well-ordered mesoporous structure ensures fast mass transport kinetics. The presence of nano-sized Fe2O3 particles confined within the carbon walls significantly enhances the specific capacity of the composite. The carbon walls in the composite act not only as an active material contributing to the specific capacity, but also as a conductive matrix improving the cycling stability of Fe2O3 nanoparticles. As a result, the well-ordered mesoporous Fe2O3/C composite exhibits high specific capacity, excellent cycleability, and high rate capability. It is proposed that this simple co-impregnation method is applicable for the preparation of well-ordered mesoporous transition oxide/carbon composite electrode materials for high performance sodium-ion and lithium-ion batteries.

Graphical abstract: Well-ordered mesoporous Fe2O3/C composites as high performance anode materials for sodium-ion batteries

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Publication details

The article was received on 13 Feb 2017, accepted on 16 Mar 2017 and first published on 16 Mar 2017


Article type: Paper
DOI: 10.1039/C7DT00540G
Citation: Dalton Trans., 2017,46, 5025-5032
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    Well-ordered mesoporous Fe2O3/C composites as high performance anode materials for sodium-ion batteries

    M. Li, C. Ma, Q. Zhu, S. Xu, X. Wei, Y. Wu, W. Tang, K. Wang and J. Chen, Dalton Trans., 2017, 46, 5025
    DOI: 10.1039/C7DT00540G

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