e-journal

Rice husk-derived porous carbons with high capacitance by ZnCl2 activation for supercapacitors

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Abstract.
Rice husk, a renewable agricultural by-product, was used as a precursor for the fabrication of high performance
porous carbons for supercapacitors by ZnCl2 activation with or without microwave-assisted
heating. Microporous carbons with the surface area bigger than 1442 m2/g are made at a ZnCl2/rice
husk mass ratio as low as 1/1 from rice husk, which is really worthwhile from the viewpoint of economic,
environmental and societal issues. Mesoporous carbons with high surface area and mesopore percentage
are made in one-step ZnCl2 activation process by microwave-assisted heating, and the supercapacitors
based on mesoporous carbons show high energy density and excellent rate performance in 6 M KOH electrolyte.
The specific capacitance of rice husk-derived mesoporous carbons made by conventional heating
retains 243 F/g after 1000 charge–discharge cycles. The findings suggest a simple yet efficient approach
to producing cost-effective porous carbons with high performance for supercapacitors.

Keywords: Rice husk; Conventional heating; Microwave heating; Porous carbon; Supercapacitor

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Ketersediaan

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Informasi Detail

Judul Seri

Electrochimica Acta

No. Panggil

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Penerbit

New York : Elsevier Ltd.., 2013

Deskripsi Fisik

Electrochimica Acta 105 (2013) 635– 641

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

105 (2013)

Subjek

POROUS-CAPASITANCE

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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