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

Seung Mi Oh, In Young Kim, Su Jeong Kim, Woong Jung, Seong Ju Hwang

Research output: Contribution to journalArticle

8 Citations (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.

Original languageEnglish
Pages (from-to)221-224
Number of pages4
JournalMaterials Letters
Volume107
DOIs
Publication statusPublished - 2013

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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