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Effect of porosity variation on the electrochemical behavior of vertically aligned multi-walled carbon nanotubes

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Abstract.
Electrochemical charge storage characteristics of vertically aligned multi-walled carbon nanotubes
(MWCNTs) as a function of varying diameter and spacing are reported. It was observed that the specific capacitance of the MWCNTs increased as both diameter and inter-tube spacing decreased. The MWCNT films
with 230 nm inter-MWCNT spacing exhibited specific capacitance of 228 F/g versus 70 F/g for 506 nm spacing,
when tested in a non-aqueous electrolyte. Further, a trend in specific capacitance versus pore size is proposed. Coupled with previously reported trends observed in the sub-10 nm pore size regime, this is expected to offer better understanding of electrochemical behavior of porous carbon materials over a wide range of pore sizes.

Keywords: Carbon nanotubes; Supercapacitors; Porosity; Specific capacitance; Electrochemical double layer capacitor; Ultracapacitor

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Ketersediaan

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Informasi Detail

Judul Seri

Electrochemistry Communications

No. Panggil

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Penerbit

New York : Elsevier B.V.., 2012

Deskripsi Fisik

Electrochemistry Communications 19 (2012) 138–141

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

19 (2012)

Subjek

KAPASITOR ELEKTROKIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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