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Preparation of mesoporous carbon spheres with a bimodal pore size distribution and its application for electrochemical double layer capacitors based on ionic liquid as the electrolyte

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Mesoporous carbon spheres with a bimodal pore size distribution were prepared by suspension polymerization
and steam activation method using phenol–formaldehyde resins as a carbon precursor. The asprepared
carbon spheres had a specific surface area of 1006 m2 g-1, total pore volume of 1.34 cm3 g-1,
mesoporous ratio of 81.3% and average pore size of 5.33 nm. Moreover, the carbon material showed a
bimodal pore size distribution (3.5 and 23.8 nm). We found a high specific capacitance of 147 F g-1 for
the carbon spheres in ionic liquid 1-ethyl-3-methylmidazolium tetrafluoroborate ([EMIm]BF4) at a
current density of 2 mA cm-2 and small impedance at the interface of electrode/electrolyte. In addition,
a specific energy of 20 Wh kg-1 at a specific power of 3100Wkg1 was obtained in some particular cases.

Keywords:
Mesoporous carbon spheres
Electrochemical double layer capacitors
Ionic liquid

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Informasi Detail

Judul Seri

Microporous and Mesoporous Materials

No. Panggil

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Penerbit

New York : Elsevier Inc.., 2012

Deskripsi Fisik

Microporous and Mesoporous Materials 151 (2012) 282–286

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

151 (2012)

Subjek

KAPASITOR ELEKTROKIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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