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有機溶媒-イオン液体混合系の鉄電極反応における有機溶媒の効果

Effect of organic solvents on the electrode reaction of iron in organic solvent-ionic liquid mixtures

横田 優; 大内 和希  ; 浜野 凌; 植野 雄大; 渡邉 雅之   

Yokota, Yu; Ouchi, Kazuki; Hamano, Ryo; Ueno, Katsuhiro; Watanabe, Masayuki

本研究は、電極反応における有機溶媒の効果を明らかにすることを目的として、種々の有機溶媒-イオン液体混合系での鉄の電極反応を分析した。1Mのイオン液体([emim]Ac)と各種有機溶媒を混合した系において、鉄のサイクリックボルタンメトリー(CV)を行った。その結果、アミド系溶媒(DMF, TMU, NMP, DMI)中において鉄の酸化還元反応のピーク電位差が比較的小さいことが確認された。これは当該溶媒系が鉄の酸化還元反応において可逆性が高く、電池反応への適用可能性を示唆するものである。

In this study, the electrode reactions of iron in various organic solvent-ionic liquid mixtures were analyzed to clarify the effects of organic solvents. Cyclic voltammetry (CV) of iron was performed in systems mixing 1 M ionic liquid ([emim]Ac) with various organic solvents. As a result, it was confirmed that the peak potential difference of the redox reaction of iron in amide-based solvents (DMF, TMU, NMP, DMI) is relatively small. This indicates that these solvent systems exhibit high reversibility in the iron redox reaction and suggests their potential applicability to battery reactions.

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