氟化物
电解质
电化学
无机化学
阴极
离子液体
离子电导率
材料科学
离子
化学
电极
有机化学
催化作用
物理化学
作者
Victoria K. Davis,Christopher M. Bates,Kaoru Omichi,Brett M. Savoie,Nebojša Momčilović,Qinghua Xu,Walter J. Wolf,Michael Webb,Keith J. Billings,Nam Hawn Chou,Selim Alayoǧlu,Ryan K. McKenney,Isabelle Darolles,Nanditha G. Nair,A. Hightower,Daniel Rosenberg,Musahid Ahmed,Christopher J. Brooks,Thomas F. Miller,Robert H. Grubbs,Simon C. Jones
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2018-12-07
卷期号:362 (6419): 1144-1148
被引量:150
标识
DOI:10.1126/science.aat7070
摘要
Fluoride ion batteries are potential "next-generation" electrochemical storage devices that offer high energy density. At present, such batteries are limited to operation at high temperatures because suitable fluoride ion-conducting electrolytes are known only in the solid state. We report a liquid fluoride ion-conducting electrolyte with high ionic conductivity, wide operating voltage, and robust chemical stability based on dry tetraalkylammonium fluoride salts in ether solvents. Pairing this liquid electrolyte with a copper-lanthanum trifluoride (Cu@LaF3) core-shell cathode, we demonstrate reversible fluorination and defluorination reactions in a fluoride ion electrochemical cell cycled at room temperature. Fluoride ion-mediated electrochemistry offers a pathway toward developing capacities beyond that of lithium ion technology.
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