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Manganese oxide–carbon composite as supercapacitor electrode materials

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a b s t r a c t
Nano-sized manganese oxide (Mn2O3) was incorporated homogeneously in templated mesoporous carbon
to prepare Mn2O3–carbon nanocomposites, which were used as supercapacitor electrodes. Cyclic voltammetry
was employed to investigate the electrochemical properties of the composite materials in an
aqueous electrolyte under different scan rates. Results showed that templated mesoporous carbon with
layered graphene domains holds a great promise for high-rate supercapacitor applications. With a wellcontrolled homogeneous insertion of Mn2O3 nanoparticles in the carbon matrix, the electrochemical performance of the composite material was significantly improved because of the contribution of
pseudocapacitance of the metal oxide. A specific capacitance of over 600 F/g was realized in term of manganese oxide in the composite materials. A volumetric specific capacitance of 253 F/cm3 was obtained on
the composite electrode. Good capacity retention of over 85% was achieved by the composite electrode
after 800 charge–discharge cycles. The greatly enhanced energy storage and high rate capability are
attributed to the homogeneous dispersion of the nano-sized transition metal oxide together with the tailored carbon nanostructure.
Keywords: Supercapacitor, Templated carbon, Nanoparticles, Manganese oxide

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Informasi Detail

Judul Seri

Microporous and Mesoporous Materials

No. Panggil

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Penerbit

: Elsevier Inc. All rights reserved., 2009

Deskripsi Fisik

Microporous and Mesoporous Materials 123 (2009) 260–267

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA KARBON

Info Detail Spesifik

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Pernyataan Tanggungjawab

yuli/agus

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