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首页> 美国政府科技报告 >Separation of Cations in Buffered 1-methyl-3-ethylimidazolium Chloride-AluminumChloride Ionic Liquids by ion Chromatography
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Separation of Cations in Buffered 1-methyl-3-ethylimidazolium Chloride-AluminumChloride Ionic Liquids by ion Chromatography

机译：离子色谱法分离缓冲的1-甲基-3-乙基咪唑氯化物 - 氯化铝离子液体中的阳离子

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Ion chromatography was used to separate sodium and 1-methyl-3-ethylimidazoliumcations in the buffered 1-methyl-3-ethylimidazolium chloride-aluminum chloride room-temperature molten salt system. The calibration curves for the two species were linear over three decades and the accuracy of the method was 2.8% relative error. The addition of aluminum chloride to 1-methyl-3-ethylimidazolium chloride (MEIC) results in the formation of an ionic liquid (melt) at room temperature. The liquids are described in terms of the apparent mole fraction, N, of aluminum chloride used to make them. These ionic liquids are of interest to our laboratory as battery electrolytes because of their wide electrochemical window, high specific conductance and good thermal properties. Their application as battery electrolytes has been demonstrated. The neutral composition has the widest electrochemical window (over 4 V), but is difficult to maintain because small changes in ion concentrations alter the electrochemistry, closing the electrochemical window by as much as 2 V. Recently, we have discovered that the addition of sodium chloride to acidic melts results in the formation of neutral buffered ionic liquids.

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