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A phase transformation route to Fe2O3-Mn 3O4 nanocomposite with improved electrode performance

Title
A phase transformation route to Fe2O3-Mn 3O4 nanocomposite with improved electrode performance
Authors
Oh S.M.Kim I.Y.Kim S.-J.Jung W.Hwang S.-J.
Ewha Authors
황성주
SCOPUS Author ID
황성주scopus
Issue Date
2013
Journal Title
Materials Letters
ISSN
0167-577XJCR Link
Citation
vol. 107, pp. 221 - 224
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Intimately mixed nanocomposite of Fe2O3 and Mn 3O4 is synthesized by an electrostatically-derived self-assembly between exfoliated MnO2 nanosheets and Fe cations, which is followed by heat-treatment at elevated temperature. The as-prepared Fe-layered MnO2 nanocomposite experiences phase transformations into Fe-substituted Mn3-xFexO4 nanoparticle at 450 C and Fe2O3-Mn3O4 nanocomposite at 650 C. The Fe2O3-Mn3O4 nanocomposite shows better performance as anode material for lithium ion batteries than the Fe-substituted Mn3-xFexO4 nanoparticle, indicating the beneficial effect of composite formation on the electrode performance of 3d metal oxide. The present finding underscores that a self-assembly between exfoliated metal oxide nanosheets and metal cations can provide useful precursor for efficient composite electrode materials. © 2013 Elsevier B.V.
DOI
10.1016/j.matlet.2013.05.050
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자연과학대학 > 화학·나노과학전공 > Journal papers
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