Journal
PHYSICA B-CONDENSED MATTER
Volume 403, Issue 10-11, Pages 1763-1769Publisher
ELSEVIER
DOI: 10.1016/j.physb.2007.10.007
Keywords
MnO2 electrode; microemulsion; MnO2 carbon composite
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Funding
- Korea Institute of Industrial Technology(KITECH) [2006-N-CT-IM-E-01-0000] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [과C6A1905] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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 alpha MnO2 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. (c) 2007 Elsevier B.V. All rights reserved.
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