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Performance of carbon–carbon supercapacitors based on organic, aqueous and ionic liquid electrolytes

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a b s t r a c t
Properties of capacitors working with the same carbon electrodes (activated carbon cloth) and three
types of electrolytes: aqueous, organic and ionic liquids were compared. Capacitors filled with ionic liquids worked at a potential difference of 3.5 V, their solutions inANand PC were charged up to the potential difference of 3 V, classical organic systems to 2.5V and aqueous to 1 V. Cyclic voltammetry, galvanostatic charging/discharging and impedance spectroscopy were used to characterize these capacitors. The highest specific energy was recorded for the device working with ionic liquids, while the highest power is characteristic for the device filled with aqueous H2SO4 electrolyte. Aqueous electrolytes led to energy density an order of magnitude lower in comparison to that characteristic of ionic liquids.
Keywords: Electrochemical double-layer capacitor, Ionic liquid, Electrolyte

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Informasi Detail

Judul Seri

Journal of Power Sources

No. Panggil

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Penerbit

: Elsevier B.V. All rights reserved., 2010

Deskripsi Fisik

Journal of Power Sources 195 (2010) 5814–5819

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

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Subjek

KIMIA KARBON

Info Detail Spesifik

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Pernyataan Tanggungjawab

yuli/agus

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