Insertion of Calcium Ion into Prussian Blue Analogue in Nonaqueous Solutions and Its Application to a Rechargeable Battery with Dual Carriers

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• 作者：Tohru Shiga ; Hiroki Kondo ; Yuichi Kato ; Masae Inoue
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：December 17, 2015
• 年：2015
• 卷：119
• 期：50
• 页码：27946-27953
• 全文大小：443K
• ISSN：1932-7455

文摘

We observed the first electrochemical insertion of Ca²⁺ into Prussian blue analogue, MnFe(CN)₆, in nonaqueous solutions of Ca(CF₃SO₃)₂ and various solvents including ionic liquid at 60 掳C. The kinetics for the Ca²⁺ insertion reaction were studied by cyclic voltammetry, and were compared to those of Na⁺ intercalation. By coupling this phenomenon with metallic anodes, two energy storage devices were made. Ca anode produced a primary cell that operated at a voltage of around 2.0 V. When Mg plate was used as an anode, the negative active material associated with CF₃SO₃^{鈥?/sup>, which we have already reported was newly formed at the surface of Mg plate. By combining the negative active material, we have fabricated a novel rechargeable battery using dual ion transport species of Ca2+ for the cathode and CF₃SO₃鈥?/sup> for the anode, and demonstrated that the battery showed repeated discharge/charge performance.}