Electrochemical synthesis of alkali-intercalated iron selenide superconductors

• 作者: 应天平 张韩 林志萍 王刚 申士杰 金士锋 陈小龙
• 来源期刊: 中国物理B（英文版）
• 关键词: superconductivity iron-based superconductor electrochemical synthesis intercalation
• 年，卷（期）: 2015,（11）
• 页码范围: 117406-1-117406-4
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/24/11/117406

摘要

Electrochemical method has been used to insert K/Na into FeSe lattice to prepare alkali-intercalated iron selenides at room temperature. Magnetization measurement reveals that KxFe2Se2 and NaxFe2Se2 are superconductive at 31 K and 46 K, respectively. This is the first successful report of obtaining metal-intercalated FeSe-based high-temperature superconductors using electrochemical method. It provides an effective route to synthesize metal-intercalated layered compounds for new superconductor exploration.