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Capacitive properties of RuO2 and Ru–Co mixed oxide deposited on single-walled carbon nanotubes for high-performance supercapacitors

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a b s t r a c t
Composite electrodes for use in redox supercapacitors were prepared by electrochemical deposition of
RuO2 or the co-deposition of Ru–Co mixed oxides on the surface of single-walled carbon nanotubes.
Electrodes coated with the Ru–Co mixed oxide [Ru (13.13 wt%) and Co (2.89 wt%)] or RuO2, exhibited
a similar specific capacitance (∼620Fg−1) at low potential scan rates (10mVs−1). However, at higher
scan rates (500mVs−1) the mixed metal oxide electrode showed superior performance (570 F g−1) when
compared to the RuO2 electrode (475 F g−1). This increase in capacitance at high scan rates is attributed
to the role of the Co in providing enhanced electronic conduction.
Keywords: Supercapacitor, Single-walled carbon nanotubes, Ruthenium oxide, Ruthenium–cobalt mixed oxide

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Informasi Detail

Judul Seri

Synthetic Metals

No. Panggil

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Penerbit

: Elsevier B.V. All rights reserved., 2009

Deskripsi Fisik

Synthetic Metals 159 (2009) 1389–1392

Bahasa

English

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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

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Pernyataan Tanggungjawab

yuli/agus

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