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Activated carbon with high capacitance prepared by NaOH activation for supercapacitors

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a b s t r a c t
Activated carbons with high volumetric capacitance are prepared from apricot shell by optimizing the
carbonization temperature prior to NaOH activation to balance the porosity and density. The carbonization
temperature has a marked effect on both the pore structure and the electrochemical performances
of the activated carbons. As the carbonization temperature increases, the specific surface area and gravimetric capacitance of the carbons decrease, while the apparent electrode density increases. Moderate
carbonization at 500 ◦C results in not only high gravimetric capacitance (339 F g−1) but also high apparent electrode density (0.504 gcm−3), and hence a highest volumetric capacitance of 171 Fcm−3 in 6 mol L−1 KOH aqueous electrolyte is obtained. The activated carbons also show good rate capability.
Keywords: Microporous materials, NaOH activation, Electrochemical properties, Supercapacitor

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Informasi Detail

Judul Seri

Materials Chemistry and Physics

No. Panggil

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Penerbit

: Elsevier B.V. All rights reserved., 2010

Deskripsi Fisik

Materials Chemistry and Physics 124 (2010) 504–509

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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