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Synthesis of nitrogen doped microporous carbons prepared by activation-free method and their high electrochemical performance

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Abstract.
Nitrogen-doped microporous carbons (N-MCs) were prepared by the carbonization of the polyvinylidene
fluoride (PVDF)/melamine mixture without chemical activation. The electrochemical performance of the
N-MCs was investigated as a function of PVDF/melamine ratio. It was found that, without additional
activation, the N-MCs had a high specific surface area (greater than 560 m2/g) because of the micropore
formation by the release of fluorine groups. In addition, although the specific surface area decreased, nitrogen groups were increased with increasing melamine content, leading to an enhanced electrochemical
performance. Indeed, the N-MCs showed a better electrochemical performance than that of microporous
carbons (MCs) prepared by PVDF alone, and the highest specific capacitance (310 F/g) was obtained at
a current density of 0.5 A/g, as compared to a value of 248 F/g for MCs. These results indicate that the
microporous features of N-MC lead to feasible ion transfer during charge/discharge duration and the
presence of nitrogen groups as strong electron donor on the N-MC electrode in electrolyte could provide
a pseudocapacitance by the redox reaction.

Keywords:
Polyvinylidene fluoride
Melamine
Nitrogen doping
Electrochemical performance

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Informasi Detail

Judul Seri

Electrochimica Acta

No. Panggil

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Penerbit

New York : Elsevier Ltd.., 2011

Deskripsi Fisik

Electrochimica Acta 56 (2011) 10130– 10136

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

56 (2011)

Subjek

PSEUDOKAPASITOR

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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