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Solvent effect on the ion adsorption from ionic liquid electrolyte into sub-nanometer carbon pores

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a b s t r a c t
This paper presents the results from the investigation of the influence of ion size on the capacitance
behaviour of TiC-derived carbon (CDC) powders in the ethyl-methylimmidazolium-bis(trifluoromethane-
sulfonyl)imide ionic liquid (EMI, TFSI) used as neat electrolyte at 60 ◦C or as salt dissolved in
acetonitrile and tested at room temperature. These studies were carried out with the assembly of conventional 3-electrode electrochemical cells as well as using the Cavity-MicroElectrode (CME) technique. The issues regarding the extents of desolvation of the electrolyte ions when adsorbed in the pores of the CDCs under applied potential were studied, the CME technique was found to be particularly efficient in the deduction of the effective ion size under solvated conditions.
Keywords: Double layer capacitors, Carbon, Sub-nanometer pore, Adsorption, Solvation effect, Extra-capacitance

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Informasi Detail

Judul Seri

Electrochimica Acta

No. Panggil

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Penerbit

: Elsevier Ltd. All rights reserved., 2009

Deskripsi Fisik

Electrochimica Acta 54 (2009) 7025–7032

Bahasa

English

ISBN/ISSN

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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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yuli/agus

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