Ordered mesoporous NiMn2Ox with hematite or spinel structure: synthesis and application in electrochemical energy storage and catalytic conversion of N2O

Yu Ren, Zhen Ma, Peter G. Bruce

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Multi-component nanocrystalline mesoporous metal oxides have attracted considerable attention recently, but their application in energy storage and catalysis has rarely been reported. Herein, nanocrystalline mesoporous NiMn2Ox materials with ordered mesostructures and high surface areas were prepared and characterized by Powder X-ray Diffraction (PXRD), transmission electron microscopy (TEM), and N-2 adsorption-desorption. The crystal phases and average crystal sizes of mesoporous NiMn2Ox could be tuned by changing the annealing temperature. Mesoporous NiMn2Ox annealed at 600 degrees C has a hematite structure (hexagonal), whereas that annealed at 800 degrees C has a spinel structure (cubic). The application of mesoporous NiMn2Ox in electrochemical energy storage and catalytic decomposition of N2O is also demonstrated.

Original languageEnglish
Pages (from-to)6955-6959
Number of pages5
JournalCrystEngComm
Volume13
Issue number23
DOIs
Publication statusPublished - 2011

Keywords

  • RECHARGEABLE LITHIUM BATTERIES
  • HIGH-SURFACE-AREA
  • CRYSTALLINE WALLS
  • MOLECULAR-SIEVES
  • METAL-OXIDES
  • NANOCASTED SYNTHESIS
  • POSITIVE ELECTRODE
  • PORE STRUCTURE
  • SILICA
  • CO3O4

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