e-journal

Preparation of cobalt hydroxide nanosheets on carbon nanotubes/carbon paper conductive substrate for supercapacitor application

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Abstract.
Multi-walled carbon nanotubes grown on the carbon paper substrate are prepared by in situ growth
in a chemical vapor deposition system. Co(OH)2 is deposited on carbon nanotubes/carbon paper by
electrodeposition methods. SEM images show that the successful growth of nanometer-sized Co(OH)2
nanosheets on the surface of carbon nanotubes/carbon paper substrate. The electrodes of Co(OH)2/carbon
nanotubes/carbon paper composite are investigated for their use in supercapacitors with cyclic voltammograms,
chronopotentiometric measurements and electrochemical impedance spectroscopy. The
composite electrode shows the largest specific capacitance of 1083 F g−1 at a current density of 0.83 A g−1
in 6 M KOH electrolyte. Furthermore, this composite exhibits good cycling stability and lifetime. The
implanted CNTs between carbon paper and Co(OH)2 act as a good conductive medium for electrodes
in supercapacitors, and the interconnected nanosheets of the Co(OH)2 can facilitate the contact of the
electrolyte with active materials, and thus increase the capacitance.

Keywords:
Supercapacitors
Cobalt hydroxide
Carbon nanotubes
Carbon paper
Nanosheets

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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 104 (2013) 110– 116

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

104 (2013)

Subjek

PSEUDOKAPASITOR

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

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