Electrochemical behavior of platinum and gold electrodes in the aprotic ionic liquid N,N-Trimethylbutylammonium Bis(trifluoromethanesulfonyl)imide

Bengio, David; Mendès, E.; Pellet‐Rostaing, Stéphane; Moisy, Philippe

doi:10.1016/j.jelechem.2018.06.034

Cited by 9 publications

(7 citation statements)

References 45 publications

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“…In this same potential range, an electrochemical signal relatedt oa dsorption andd esorption of protons can be observed in neat IL if the electrode is polarized first to 2.0 Vv s. Fc + /Fc ( Figure 6, red dashed line). [40] Consequently,i ft he voltammetricr ange is extended to + 2Vvs. Fc + /Fc, then ad eformationo ft he peaks relatedt oE u III reduction and Eu II oxidation is observed after the first voltammetric cycle ( Figure 6, blue dotted line).…”

Section: Electrochemical Behavior Of Eu In [Emim][ntf 2 ]mentioning

confidence: 99%

Electrochemical and Spectroscopic Study of Eu^III and Eu^II Coordination in the 1‐Ethyl‐3‐methylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquid

Bengio

Dumas

Arpigny

et al. 2020

Chemistry A European J

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Separation processes based on room temperature ionic liquids (RTIL) and electrochemical refining are promising strategies for the recoveryo fl anthanides from primary ores and electronic waste. However,t hey require the speciation of dissolved elements to be knownw ith accuracy. In the present study,E uc oordination and Eu III /Eu II electrochemical behavior as af unction of water contenti n1-ethyl-3methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIm] [NTf 2 ]) was investigatedu sing UV-visible spectrophotometry, time-resolvedl aser fluorescence spectroscopy,e lectrochemistry,a nd X-ray absorption spectroscopy. In situ measurements were performed in spectroelectrochemicalc ells. Undera nhydrous conditions, Eu III and Eu II were complexed by NTf 2 ,f orming EuÀOa nd EuÀ(N,O) bonds with the anion sulfoxide functiona nd Na toms, respectively.T his complexation resulted in agreater stabilityofEu II ,and in quasi-reversible oxidation-reduction with an E 0 'p otential of 0.18 V versust he ferrocenium/ferrocene (Fc + /Fc) couple. Upon increasingw ater content,p rogressivei ncorporation of water in the Eu III coordination sphereo ccurred. This led to reversible oxidation-reduction reactions, but also to ad ecreasei n stabilityo ft he + II oxidation state (E 0 ' = À0.45 Vv s. Fc + /Fc in RTIL containing 1300 mm water).

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Section: Electrochemical Behavior Of Eu In [Emim][ntf 2 ]mentioning

confidence: 99%

Electrochemical and Spectroscopic Study of Eu^III and Eu^II Coordination in the 1‐Ethyl‐3‐methylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquid

Bengio

Dumas

Arpigny

et al. 2020

Chemistry A European J

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“…Figure 3(a) shows CV curves obtained with Au-IDEs in IL-1 and IO-1 in the potential range between -3 V and +3 V. The general appearance of the IL-1 voltammogram is very similar to that obtained with diluted H2SO4 (see SI, figure S3). The presence of peaks at -0.68 V and 0.61 V are related to the reduction and oxidation of hydrogen atoms and oxygen-containing surface species [43][44][45] absorbed by the moisture of the atmosphere.…”

Section: Study Of the Electrochemical Properties Of Ils And Iosmentioning

confidence: 99%

Electrical and electrochemical properties of imidazolium and phosphonium-based pNIPAAM ionogels

Gil-González

Benito‐Lopez

Castaño

et al. 2020

Electrochimica Acta

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“…Similar patterns for redox-active impurities have been reported for ILs on platinum electrodes and attributed to difficult-to-remove contaminants from the IL synthesis. The two peaks on the gold electrode (nearest the anodic limit of the ECW at about +1.5 V vs Ag/AgCl) correspond to the formation of gold oxide and reduction of gold oxide in the presence of water . Trace levels of moisture are commonly present in ILs even after extended periods under vacuum or using dry, inert gases. , …”

Section: Resultsmentioning

confidence: 99%

Nanostructure of Locally Concentrated Ionic Liquids in the Bulk and at Graphite and Gold Electrodes

Wang,

Buzolic,

Mullen

et al. 2023

ACS Nano

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The physical properties of ionic liquids (ILs) have led to intense research interest, but for many applications, high viscosity is problematic. Mixing the IL with a diluent that lowers viscosity offers a solution if the favorable IL physical properties are not compromised. Here we show that mixing an IL or IL electrolyte (ILE, an IL with dissolved metal ions) with a nonsolvating fluorous diluent produces a low viscosity mixture in which the local ion arrangements, and therefore key physical properties, are retained or enhanced. The locally concentrated ionic liquids (LCILs) examined are 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (HMIM TFSI), 1hexyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate (HMIM FAP), or 1-butyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate (BMIM FAP) mixed with 1,1,2,2-tetrafluoroethyl 2,2,2-trifluoroethyl ether (TFTFE) at 2:1, 1:1, and 1:2 (w/w) IL:TFTFE, as well as the locally concentrated ILEs (LCILEs) formed from 2:1 (w/w) HMIM TFSI−TFTFE with 0.25, 0.5, and 0.75 m lithium bis(trifluoromethylsulfonyl)imide (LiTFSI). Rheology and conductivity measurements reveal that the added TFTFE significantly reduces viscosity and increases ionic conductivity, and cyclic voltammetry (CV) reveals minimal reductions in electrochemical windows on gold and carbon electrodes. This is explained by the small-and wide-angle X-ray scattering (S/WAXS) and atomic force microscopy (AFM) data, which show that the local ion nanostructures are largely retained in LCILs and LCILEs in bulk and at gold and graphite electrodes for all potentials investigated.

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Electrochemical behavior of platinum and gold electrodes in the aprotic ionic liquid N,N-Trimethylbutylammonium Bis(trifluoromethanesulfonyl)imide

Cited by 9 publications

References 45 publications

Electrochemical and Spectroscopic Study of Eu^III and Eu^II Coordination in the 1‐Ethyl‐3‐methylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquid

Electrochemical and Spectroscopic Study of Eu^III and Eu^II Coordination in the 1‐Ethyl‐3‐methylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquid

Electrical and electrochemical properties of imidazolium and phosphonium-based pNIPAAM ionogels

Nanostructure of Locally Concentrated Ionic Liquids in the Bulk and at Graphite and Gold Electrodes

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Electrochemical behavior of platinum and gold electrodes in the aprotic ionic liquid N,N-Trimethylbutylammonium Bis(trifluoromethanesulfonyl)imide

Cited by 9 publications

References 45 publications

Electrochemical and Spectroscopic Study of EuIII and EuII Coordination in the 1‐Ethyl‐3‐methylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquid

Electrochemical and Spectroscopic Study of EuIII and EuII Coordination in the 1‐Ethyl‐3‐methylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquid

Electrical and electrochemical properties of imidazolium and phosphonium-based pNIPAAM ionogels

Nanostructure of Locally Concentrated Ionic Liquids in the Bulk and at Graphite and Gold Electrodes

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Product

Resources

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Electrochemical and Spectroscopic Study of Eu^III and Eu^II Coordination in the 1‐Ethyl‐3‐methylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquid

Electrochemical and Spectroscopic Study of Eu^III and Eu^II Coordination in the 1‐Ethyl‐3‐methylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquid