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.
Original language | English |
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Pages (from-to) | 221-224 |
Number of pages | 4 |
Journal | Materials Letters |
Volume | 107 |
DOIs | |
State | Published - 2013 |
Keywords
- Energy storage and conversion
- Nanocomposites
- Nanoparticles
- Nanosize
- Particles
- Phase transformation