A mechanistic study of the electro-oxidation of bromide in acetonitrile and the room temperature ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide at platinum electrodes

Allen, Gary D.; Buzzeo, Marisa C.; Villagrán, Constanza; Hardacre, Christopher; Compton, Richard G.

doi:10.1016/j.jelechem.2004.09.023

Cited by 106 publications

(67 citation statements)

References 25 publications

(39 reference statements)

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“…The physical rationale for the simulation of the double-wave is that, although the nitrophenol is consumed both electrochemically at the electrode surface and chemically in solution, it is also regenerated at a later stage in solution and so an initial depletion (due to wave I) is followed by a rise in the concentration of electroactive species within the reaction layer, resulting in wave II. This phenomenon, where a single diffusing species results in two voltammetric waves, has been previously reported by Allen et al [2] for the oxidation of bromide in [C 4 mim][N(Tf) 2 ]. Attempts to fit waves I and II under the mechanistic scheme posed (Scheme 2) with Eq.…”

Section: Modelling the Reduction Of 4-nitrophenol In Digisim òsupporting

confidence: 74%

“…2 ] on a 25 lm diameter gold microdisk electrode at a scan rate of 100 mV s À1 . The voltammetric wave at À1.2 V vs. Ag (i) corresponds to the reversible oneelectron reduction to the radical anion which is commonly known in aprotic solvents [16][17][18][23][24][25]37].…”

Section: Resultsmentioning

confidence: 99%

“…Chronoamperometric data (Fig. 4 2 ] on a gold electrode (diameter 25 lm) at a scan rate of 100 mV s À1 . The electrochemical window was extended to +1 V vs. Ag, and two anodic peaks (IV and V) at +0.13 V and +0.81 V vs. Ag were observed.…”

Section: Electrochemical Reduction Of 4-nitrophenol In [C 4 Dmim][n(tmentioning

confidence: 99%

“…Recently, room temperature ionic liquids (RTILs) have become increasingly popular for use as solvents in electrochemical experiments [1][2][3][4][5][6][7][8][9][10][11][12]. Their wide electrochemical windows allow the extension of study to more negative (and positive) potentials than in conventional organic solvents [5].…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical reduction of nitrobenzene and 4-nitrophenol in the room temperature ionic liquid [C4dmim][N(Tf)2]

Silvester

Wain

Aldous

et al. 2006

Journal of Electroanalytical Chemistry

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111

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Section: Modelling the Reduction Of 4-nitrophenol In Digisim òsupporting

confidence: 74%

Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Reduction Of 4-nitrophenol In [C 4 Dmim][n(tmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrochemical reduction of nitrobenzene and 4-nitrophenol in the room temperature ionic liquid [C4dmim][N(Tf)2]

Silvester

Wain

Aldous

et al. 2006

Journal of Electroanalytical Chemistry

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116

111

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“…− ion to bromine, respectively. 35 The redox waves observed at the limiting potentials are due to the following electrochemical reactions: In addition to these reactions, in light of the fact that electrochemically-produced tribromide anion is stable in RTILs, 35,[44][45][46] it is highly likely that the following reaction also proceeds during the anodic reaction.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Energy Storage Device with a Lewis Acidic AlBr₃−1-Ethyl-3-methylimidazolioum Bromide Room-Temperature Ionic Liquid

Tsuda¹,

Kokubo²,

Kawabata³

et al. 2014

J. Electrochem. Soc.

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Now room-temperature ionic liquid (RTIL) is becoming a general term in the fields of science and technology owing to its useful physicochemical properties. A great number of applications with RTIL are proposed to date. Here we report an original electrochemical energy storage device with a Lewis acidic 60.0-40.0 mol% AlBr 3 −1-ethyl-3-methylimidazolioum bromide ([C 2 mim]Br) RTIL. The unique electrochemical reactions related to [AlBr 4 ] − anion on the positive electrode have a crucial role in the energy storage device. The charge-discharge ratio for the beaker cell prepared in this investigation was almost 100% at 2.0 ∼ 5.0 mA (150 ∼ 370 mA g −1 for activated carbon fiber cloth) if the cutoff voltage for the charging process was less than 1.70 V. The clear self-discharge behavior was not observed and the cell capacity after 100 cycles was identical to the maximum value. Rechargeable battery is a quite important energy storage device for sustaining our modern life. It is well-known that there are many types of rechargeable batteries. Of these, lithium-ion rechargeable battery has been already used in the various fields, but minor elements including lithium and cobalt are commonly used for the battery. It will become a major difficulty by further development of lithium-ion battery industry in the future. In addition, it seems to be unsuitable for a large scale electric storage system because of its insufficient rapid charge-discharge characteristics and safety issue. In recent years, a multivalent-metal ion, e.g., Mg(II), rechargeable battery system has attracted attention as a next generation high-capacity battery system because it can flow a larger current exceeding the lithium-ion rechargeable battery. [1][2][3][4] However it is difficult to electrochemically reduce such multivalent-metal ion due to its negative electrode potential. Even if the metal ion is reduced to metal state, in many cases, it would not achieve a sufficient coulomb efficiency in the chargedischarge process since the highly-reactive metal deposited on the negative electrode during the charging process easily reacts with the electrolyte. Another problematic point is that there are a limited number of choices on active materials for the positive electrode. If any, the active material does not show a favorable coulomb efficiency and the charge-discharge rate is not enough compared to that for current Li battery system.2-4 Another possible high-capacity electrochemical energy storage system is a redox flow battery, which has a low environmental impact and can store a huge energy. Unfortunately still many scientific and technological challenges, such as improvement in the electrolyte potential window and development of the separator that can perfectly protect the catholyte and anolyte against their undesirable contamination, remain. 5-9Room-temperature ionic liquids (RTILs) that are liquid salts at room-temperature, e.g., 298 K, have received considerable attention as novel reaction media, especially in this decade, because of their desirable ...

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The Electrochemistry of Halogens

Marken

2006

Encyclopedia of Electrochemistry

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The sections in this article are Introduction The Electrochemistry of Fluorine Introduction Electrochemical Generation of Fluorine Electrofluorination in Synthesis Gas and Ion Sensors for Fluorine and Fluoride The Electrochemistry of Chlorine Introduction Electrogeneration of Chlorine Gas In Situ Electrogeneration of Chlorine Miscellaneous Methods and Applications Involving Electrogenerated Chlorine Sensors for Chlorine and Chloride The Electrochemistry of Bromine Introduction Electrochemical Generation of Bromine Electrobromination in Synthesis Electrogenerated Bromine as Redox Mediator Electrobromination Processes in Room Temperature Ionic Liquids Miscellaneous Methods and Applications Involving Electrogenerated Bromine Sensors for Bromine and Bromide The Electrochemistry of Iodine Introduction Electrochemical Studies of Iodine Generation Electroiodination and Electrogenerated Iodine as a Redox Mediator in Electrosynthesis Miscellaneous Methods and Applications Involving Iodine Redox Systems Application of Iodine as a Redox Mediator in Electroanalysis Sensors for Iodine and Iodide The Electrochemistry of Astatine Introduction Electrochemical Studies

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A mechanistic study of the electro-oxidation of bromide in acetonitrile and the room temperature ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide at platinum electrodes

Cited by 106 publications

References 25 publications

Electrochemical reduction of nitrobenzene and 4-nitrophenol in the room temperature ionic liquid [C4dmim][N(Tf)2]

Electrochemical reduction of nitrobenzene and 4-nitrophenol in the room temperature ionic liquid [C4dmim][N(Tf)2]

Electrochemical Energy Storage Device with a Lewis Acidic AlBr₃−1-Ethyl-3-methylimidazolioum Bromide Room-Temperature Ionic Liquid

The Electrochemistry of Halogens

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A mechanistic study of the electro-oxidation of bromide in acetonitrile and the room temperature ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide at platinum electrodes

Cited by 106 publications

References 25 publications

Electrochemical reduction of nitrobenzene and 4-nitrophenol in the room temperature ionic liquid [C4dmim][N(Tf)2]

Electrochemical reduction of nitrobenzene and 4-nitrophenol in the room temperature ionic liquid [C4dmim][N(Tf)2]

Electrochemical Energy Storage Device with a Lewis Acidic AlBr3−1-Ethyl-3-methylimidazolioum Bromide Room-Temperature Ionic Liquid

The Electrochemistry of Halogens

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Product

Resources

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Electrochemical Energy Storage Device with a Lewis Acidic AlBr₃−1-Ethyl-3-methylimidazolioum Bromide Room-Temperature Ionic Liquid