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

Fingerprint

electrochemical capacitors
Nanorods
nanorods
Carbon
Electrodes
composite materials
electrodes
carbon
Composite materials
Manganese oxide
manganese oxides
Microemulsions
Phase boundaries
High resolution transmission electron microscopy
Powders
Capacitance
capacitance
Annealing
X ray diffraction
preparation

All Science Journal Classification (ASJC) codes

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

Cite this

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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.",
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Growth and characterization of carbon-supported MnO2 nanorods for supercapacitor electrode. / Sharma, Raj Kishore; Oh, Hyung Suk; Shul, Yong Gun; Kim, Hansung.

In: Physica B: Condensed Matter, Vol. 403, No. 10-11, 01.05.2008, p. 1763-1769.

Research output: Contribution to journalArticle

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AU - Oh, Hyung Suk

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AB - 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.

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