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Preparation and electrochemical characteristics of mesoporous carbon spheres for supercapacitors

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A B S T R A C T
Mesoporous carbon spheres serving as electrode materials for supercapacitors were synthesized by a
facile polymerization-induced colloid aggregation method using melamines as a carbon precursor and
commercial colloidal silica as a silica source for hard template. After the carbonization of as-formed
resins-template composites at 1000 8C and the removal of the silica template by hydrofluoric acid, the
resulting mesoporous carbon spheres with a diameter size of 5 mm, specific surface area (up to
1280 m2/g) and uniform pore size as large as 30 nm could be obtained. Due to the enriched nitrogen
content and the large pore size of the mesoporous carbon spheres affecting the surface wettability,
resistance, and ion diffusion process in the pores, the mesoporous carbon spheres showed a high specific
capacitance of 196 F/g in 5 mol/l H2SO4 electrolytes at a discharge current density of 1 A/g.
Keywords: Electronic materials, Chemical synthesis, Electrochemical properties, Energy storage

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Informasi Detail

Judul Seri

Materials Research Bulletin

No. Panggil

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Penerbit

: Elsevier Ltd. All rights reserved., 2009

Deskripsi Fisik

Materials Research Bulletin 45 (2010) 10–14

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

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