Growth and characterization of carbon-supported MnO2 nanorods for supercapacitor electrode

Raj Kishore Sharma, Hyung Suk Oh, Yong Gun Shul, Hansung Kim

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Preparation of carbon-supported nano-MnO2 composite (MnO2/C) by microemulsion process is reported. As evidenced by high-resolution transmission electron microscopy (HR-TEM) micrographs, highly dispersed MnO2 nanorods over carbon surface with clear inter-phase boundaries are obtained. X-ray diffraction results of as grown composite powder confirm the αMnO2 phase of manganese oxide that on annealing at elevated temperatures undergo oxidative transformation to Mn3O4 and Mn2O3 phases. The small size and high dispersion of MnO2 nanorods in the composite material exhibited high capacitance of 165 Fg-1 for MnO2/C and 458 Fg-1 for pure MnO2.

Original languageEnglish
Pages (from-to)1763-1769
Number of pages7
JournalPhysica B: Condensed Matter
Volume403
Issue number10-11
DOIs
Publication statusPublished - 2008 May 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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