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Influence of carbon nanotubes addition on carbon–carbon supercapacitor performances in organic electrolyte

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Abstract
This paper presents the performances of 4 cm2 supercapacitors cells assembled with 200 m thick active material films composed with activated carbon and carbon nanotubes mixture in organic electrolyte. Galvanostatic and electrochemical spectroscopy impedance measurements have been carried out. Galvanostatic measurements show that both internal resistance and specific capacitance decrease when the
carbon nanotubes content increases in the active material.With 15% of carbon nanotubes, the internal resistance is 0.65cm2 and the specific capacitance is 90 F g−1 measured at 20mAcm−2. This performances remain stable during 10,000 cycles. The characterization of the frequency behavior was made by Electrochemical Impedance Spectroscopy. For 15% of CNTs content in the active material, the relaxation time (ϕ = −45◦) is divided by 3 as compared to a supercapacitor using pure activated carbon electrodes.

Keywords: Supercapacitor; Activated carbon; Carbon nanotubes; Power device

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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., 2004

Deskripsi Fisik

Journal of Power Sources 139 (2005) 371–378

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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