e-journal

Electrical double layer capacitors with activated sucrose-derived carbon electrodes

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A B S T R A C T
Electrical double layer capacitors (EDLCs) with activated sucrose-derived carbons (ASCs) as
electrodes are reported. The carbons were prepared by the pyrolysis of sucrose followed by
the activation with CO2 gas for 1–5 h at 900 -C to tune the pore size distribution and the specific
surface area (SSA). The porosity of the ASCs has been characterized using N2 and CO2
adsorption measurements. The activation increased the SSA from -200 to 3000 m2 g-1 and
produced pores mostly in the 0.4–2 nm range. The pyrolysis of sucrose without CO2 activation
produces a carbon with specific capacitance as low as 4 F g-1, whereas selected ASCs
exhibit specific capacitance in excess of 160 F g-1 and excellent frequency response in a
two-electrode EDLC cell with 1 M H2SO4 electrolyte. The activation time of 4 h resulted in
the most promising electrochemical performance. Excellent ASC stability was confirmed
by extensive electrochemical characterization after 10,000 charge–discharge cycles.

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Informasi Detail

Judul Seri

CARBON

No. Panggil

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Penerbit

: Elsevier Ltd. All rights reserved., 2011

Deskripsi Fisik

CARBON 4 9 ( 2 0 1 1 ) 4 8 3 0 –4 8 3 8

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

Versi lain/terkait

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