Structure of the electrical double layer on the aqueous solution side of the polarized interface between water and a room-temperature ionic liquid, tetrahexylammonium bis(trifluoromethylsulfonyl)imide

Ryoichi Ishimatsu; Fumiko Shigematsu; Takuma Hakuto; Naoya Nishi; Takashi Kakiuchi

doi:10.1021/la0623073

Structure of the electrical double layer on the aqueous solution side of the polarized interface between water and a room-temperature ionic liquid, tetrahexylammonium bis(trifluoromethylsulfonyl)imide

Ryoichi Ishimatsu, Fumiko Shigematsu, Takuma Hakuto, Naoya Nishi, Takashi Kakiuchi

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

The structure of the electrical double layer on the aqueous solution side has been studied by measuring electrocapillary curves at the polarized interface between a room-temperature ionic liquid (RTIL), tetrahexylammonium bis(trifluoromethylsulfonyl)imide, and water (W) at different concentrations of LiCl. Thermodynamic analysis of the electrocapillary curves indicates that Li⁺ ions negatively adsorb at the point of zero charge. The adsorption of Li⁺ and Cl^- ions in the polarized potential window of about 200 mV can be explained by the Gouy's double layer model, and the specific adsorption of Li⁺ and Cl^- ions at the RTIL|W interface is negligible within the polarized potential window.

Original language	English
Pages (from-to)	925-929
Number of pages	5
Journal	Langmuir
Volume	23
Issue number	2
DOIs	https://doi.org/10.1021/la0623073
Publication status	Published - Jan 16 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la0623073

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Structure of the electrical double layer on the aqueous solution side of the polarized interface between water and a room-temperature ionic liquid, tetrahexylammonium bis(trifluoromethylsulfonyl)imide. / Ishimatsu, Ryoichi; Shigematsu, Fumiko; Hakuto, Takuma; Nishi, Naoya; Kakiuchi, Takashi.

In: Langmuir, Vol. 23, No. 2, 16.01.2007, p. 925-929.

Research output: Contribution to journal › Article › peer-review

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Structure of the electrical double layer on the aqueous solution side of the polarized interface between water and a room-temperature ionic liquid, tetrahexylammonium bis(trifluoromethylsulfonyl)imide

Abstract

All Science Journal Classification (ASJC) codes

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