All-Solid-State Potassium Polymer Batteries Enabled by the Effective Pretreatment of Potassium Metal
All-Solid-State Potassium Polymer Batteries Enabled by the Effective Pretreatment of Potassium Metal
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DOI：
10.1021/acsenergylett.2c01096
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发表时间：
2022-06-08
影响因子：
22
通讯作者：
Komaba, Shinichi
中科院分区：
文献类型：
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作者：
Hamada, Mizuki;Tatara, Ryoichi;Komaba, Shinichi
将一块钾金属置于含有双（氟磺酰）酰胺钾（KFSA）和1,3,2 - 二氧硫杂环戊烷2,2 - 二氧化物（DTD）的1,2 - 二甲氧基乙烷（DME）溶液中制备的钾金属圆盘电极，在由交联聚合物电解质组成的对称半电池的连续金属溶出 - 沉积反应中表现出极化和界面电阻的抑制。这种简单有效的预处理工艺促进了钝化层的形成，使得能够制造出首个在室温下工作的3V级全固态钾离子电池。
K metal disk electrodes, prepared by putting a chunk of K metal in a 1,2-dimethoxyethane (DME) solution containing potassium bis-(fluorosulfonyl)amide (KFSA) and 1,3,2-dioxathiolane 2,2-dioxide (DTD), exhibited suppressed polarization and interfacial resistance in continuous metal stripping-deposition reactions of a symmetric half-cell comprising a cross-linked polymer electrolyte. This simple and effective pretreatment process enhances passivation layer formation, enabling fabrication of the first 3 V-class all-solid-state K-ion battery operated at room temperature.