2018
DOI: 10.1149/08614.0125ecst
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(Invited) Probing Electrochemical Ionic Liquid Interfaces

Abstract: Ionic liquids are known to be excellent solvents but their relatively high viscosities can inhibit electrochemical reactions. We describe mixtures of two common ionic liquids, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMIM OTf) and 1-butyl-3-methylimidazolium trifluoromethanesulfonate (BMIM OTf), with two common molecular solvents, water and acetonitrile. We analyze the solution viscosity and correlate this to the dynamic response of the electrochemical double layer by recording current vs. time a… Show more

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Cited by 1 publication
(4 citation statements)
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“…Furthermore, the oxide layer is undoubtedly stripped off during the cathodic sweep. We have previously demonstrated similar reduction in CO 2 RR overpotential in neat [EMIM]­[OTf] upon addition of pure water on a pure polycrystalline silver electrode, which is less prone to oxidize compared to pure Pb. , …”
Section: Resultsmentioning
confidence: 89%
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“…Furthermore, the oxide layer is undoubtedly stripped off during the cathodic sweep. We have previously demonstrated similar reduction in CO 2 RR overpotential in neat [EMIM]­[OTf] upon addition of pure water on a pure polycrystalline silver electrode, which is less prone to oxidize compared to pure Pb. , …”
Section: Resultsmentioning
confidence: 89%
“…In an effort to further improve current density for CO 2 RR while maintaining the reduced overpotential an aprotic solvent, acetonitrile, was added to the IL/water mixture. We recently reported the dramatic improvements to current density for CO 2 RR with the addition of MeCN to neat [EMIM]­[OTf] on the polycrystalline silver electrode . The dielectric constants of [EMIM]­[OTf], water, acetonitrile, and water are 16.5, 80.0, and 37.5, respectively, at 25 °C.…”
Section: Resultsmentioning
confidence: 99%
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