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Electrochemical study of activated carbon-semiconducting oxide composites as electrode materials of double-layer capacitors

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Abstract
The energy storage of activated carbon modified with a semiconducting oxide TiO2 is studied. The composite was prepared by mixing nanosize TiO2 and activated carbon through a means of ultrasonic vibration in ethanol solution for 30 min. It was found that with modification of TiO2, the specific capacitance of activated carbon measured at 0.65 mA/cm2 was increased from 47.2 to 63.1 F g−1. This method is unique in comparison the conventional method because it uses semiconducting TiO2 other than electrochemically active materials such as RuO2. The later has been adopted to make electrochemical-double-layer hybrid supercapacitors, however, the former is attributed to a pure double-layer supercapacitor.
Keywords: Semiconducting oxide; Activated carbon; Supercapacitors; Double-layer

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Informasi Detail

Judul Seri

Electrochimica Acta

No. Panggil

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Penerbit

: Elsevier Ltd. All rights reserved., 2004

Deskripsi Fisik

Electrochimica Acta 49 (2004) 3463–3467

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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