Liquid K-Na Alloy Anode Enables Dendrite-Free Potassium Batteries

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• 作者：Leigang Xue ; Hongcai Gao ; Weidong Zhou ; Sen Xin ; Kyusung Park ; Yutao Li and John B. Goodenough
• 刊名：Advanced Materials
• 出版年：2016
• 出版时间：November 16, 2016
• 年：2016
• 卷：28
• 期：43
• 页码：9608-9612
• 全文大小：846K
• ISSN：1521-4095

文摘

A K–Na liquid alloy allows a dendrite-free high-capacity anode; its immiscibility with an organic liquid electrolyte offers a liquid–liquid anode–electrolyte interface. Working with a sodiated Na₂MnFe(CN)₆ cathode, the working cation becomes K⁺ to give a potassium battery of long cycle life with an acceptable capacity at high charge/discharge rates.