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Preparation and one-step activation of microporous carbon nanofibers for use as supercapacitor electrodes

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Abstract.
Microporous carbon nanofibers were prepared by electrospinning from resole-type phenolic
resin, followed by one-step activation. KOH was utilized to tune the fiber diameter and
improve porous texture. By adjusting KOH content in the spinning solution, the fiber
diameter could be controlled in the range of 252–666 nm and the microporous volume
and specific surface area could be greatly improved. The electrochemical measurements
in 6 M KOH aqueous solution showed that the microporous carbon nanofibers possessed
high specific capacitance, considerable rate performance, and superior specific surface
capacitance to conventional microporous carbons. The maximal specific capacitance of
256 F g-1 and high specific surface capacitance of 0.51 F m-2 were achieved at 0.2 A g-1. Furthermore,
the specific capacitance could still remain 170 F g-1 at 20 A g-1 with the retention
of 67%. Analysis showed that the high specific surface capacitance of the resultant carbons
was mainly attributed to optimized pore size (0.7–1.2 nm) and the excellent rate performance
should be principally due to the reduced ion transportation distance derived from
the nanometer-scaled fibers.

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Ketersediaan

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Informasi Detail

Judul Seri

CARBON

No. Panggil

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Penerbit

New York : Elsevier Ltd.., 2013

Deskripsi Fisik

CARBON 51 (2013) 290 –300

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

51 (2013)

Subjek

KAPASITOR ELEKTROKIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

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