e-journal

Electrochemical characterization of activated carbon–ruthenium oxide nanoparticles composites for supercapacitors

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Abstract
The high specific capacitance of ruthenium oxide (denoted as RuOx) nanoparticles prepared by a modified sol–gel method with annealing in air for supercapacitorswas demonstrated in thiswork. The specific capacitance of activated carbon (denoted asAC) measured at 5 mA/cm2 is significantly increased from 26.8 to 38.7 F/g by the adsorption of RuOx nanoparticles with ultrasonic weltering in 1MNaOH for 30 min.
This method is a promising tool in improving the performance of carbon-based double-layer capacitors. The total specific capacitance of a composite composed of 90 wt.% AC and 10 wt.% RuOx measured at 25 mV/s is about 62.8 F/g, which is increased up to ca. 111.7 F/g when RuOx has been previously annealed in air at 200 ◦C for 2 h. The specific capacitance of RuOx nanoparticles was promoted from 470 to 980 F/g by annealing in air at 200 ◦C for 2 h. The nanostructure of RuOx was examined from the transmission electron microscopic (TEM) morphology.
Keywords: Composites; RuOx nanoparticles; Activated carbon; Supercapacitors

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Informasi Detail

Judul Seri

Journal of Power Sources

No. Panggil

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Penerbit

: Elsevier B.V. All rights reserved., 2003

Deskripsi Fisik

Journal of Power Sources 125 (2004) 292–298

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

Versi lain/terkait

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