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Anion-Tunable Properties and Electrochemical Performance of Functionalized Ferrocene Compounds

机译:官能化二茂铁化合物的阴离子可调性和电化学性能

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摘要

We report a series of ionically modified ferrocene compounds for hybrid lithium-organic non-aqueous redox flow batteries, based on the ferrocene/ferrocenium redox couple as the active catholyte material. Tetraalkylammonium ionic moieties were incorporated into the ferrocene structure, in order to enhance the solubility of the otherwise relatively insoluble ferrocene. The effect of various counter anions of the tetraalkylammonium ionized species appended to the ferrocene, such as bis(trifluoromethanesulfonyl)imide, hexafluorophosphate, perchlorate, tetrafluoroborate, and dicyanamide on the solubility of the ferrocene was investigated. The solution chemistry of the ferrocene species was studied, in order to understand the mechanism of solubility enhancement. Finally, the electrochemical performance of these ionized ferrocene species was evaluated and shown to have excellent cell efficiency and superior cycling stability.
机译:我们报告了一系列的离子改性的二茂铁化合物,用于混合锂有机非水氧化还原液流电池,基于二茂铁/二茂铁氧化还原对作为活性阴极材料。将四烷基铵离子部分掺入二茂铁结构中,以增强原本相对不溶的二茂铁的溶解度。研究了连接到二茂铁上的四烷基铵离子化物种的各种抗衡阴离子,例如双(三氟甲磺酰基)酰亚胺,六氟磷酸根,高氯酸根,四氟硼酸根和二氰胺对二茂铁溶解度的影响。为了了解溶解度增加的机理,研究了二茂铁物质的溶液化学。最后,对这些离子化的二茂铁物种的电化学性能进行了评估,结果表明它们具有出色的电池效率和出色的循环稳定性。

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