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Preparation and performance of straw based activated carbon for supercapacitor in non-aqueous electrolytes

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a b s t r a c t
The activated carbon with honeycomb-like morphology for electrochemical double layer capacitors
(EDLCs) was prepared from wheat straw by carbonization and subsequent activation with KOH. The product
presented micro- and mesoporous structure with the peak pore size of 2.1 nm and high specific surface
area of 2316 m2/g. The electrochemical capacitance performances of the activated carbon as EDLC
electrodes were characterized by using cyclic voltammetry (CV), alternating current (AC) impedance.
The specific capacitance of the activated carbon reached 251.1 F/g at 2 mV/s scan rate in the electrolyte
of MeEt3NBF4/AN. The thermal gravimetric analysis of AN impregnated carbon was explored as a new
approach to investigate the effectivity of pore for the electrolytes. The relationships between specific
capacitance and scan rate, surface area and pore diameter were discussed.
Keywords: Activated carbon, EDLCs, Organic electrolytes, Specific surface area, Accessible volume

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Informasi Detail

Judul Seri

Microporous and Mesoporous Materials

No. Panggil

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Penerbit

: Elsevier Inc. All rights reserved., 2010

Deskripsi Fisik

Microporous and Mesoporous Materials 131 (2010) 303–309

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

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