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Effect of annealing temperature on electrochemical characteristics of ruthenium oxide/multi-walled carbon nanotube composites

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a b s t r a c t
The preparation and characterization of high-surface-area ruthenium oxide (RuO2)/multi-walled carbon
nanotubes (MWCNTs) composite electrodes for use in supercapacitors is reported in this work. The
RuO2/MWCNTs composites were prepared by the polyol process of RuO2 intoMWCNTsand by Ru annealing
in air before mixed with MWCNTs. The chemically oxidized and annealed Ru nanoparticles contribute
a pseudocapacitance to the electrodes and dramatically improve the energy storage characteristics of the
MWCNTs. These composites annealed at 200 ◦C demonstrate specific capacitances in excess of 130 F/g
in comparison to 80 F/g for pristine MWCNTs. The annealing temperature is found to play an important
role, as it affects the electrochemical performance of annealed RuO2/MWCNTs composites critically due
to its influence on the diffusion of protons into the structure.
Keywords: Annealing, Carbon nanotubes, Ruthenium oxide, Composites, Electrochemical properties

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Informasi Detail

Judul Seri

Materials Science and Engineering B

No. Panggil

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Penerbit

: Elsevier B.V. All rights reserved.., 2010

Deskripsi Fisik

Materials Science and Engineering B 167 (2010) 65–69

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

Info Detail Spesifik

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Pernyataan Tanggungjawab

yuli/agus

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