New inorganic ionic liquids possessing low melting temperatures and wide electrochemical windows: Ternary mixtures of alkali bis(fluorosulfonyl)amides

被引：35
作者：
Kubota, Keigo [1 ]
Nohira, Toshiyuki [1 ]
Hagiwara, Rika [1 ]
机构：
[1] Kyoto Univ, Grad Sch Energy Sci, Sakyo Ku, Kyoto 6068501, Japan
来源：
ELECTROCHIMICA ACTA | 2012年 / 66卷
关键词：
Bis(fluorosulfonyl)amide; Molten salt; Ionic liquid; Phase diagram; Electrochemical window; THERMAL-PROPERTIES; POLYMER BATTERIES; CRYSTAL-STRUCTURE; BINARY-MIXTURES; BIS(TRIFLUOROMETHYLSULFONYL)AMIDES; ELECTROLYTE; FLUORIDE;
D O I：
10.1016/j.electacta.2012.01.097
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Four kinds of ternary phase diagrams of alkali bis(fluorosulfonyl)amides, LiFSA-NaFSA-KFSA, LiFSA-NaFSA-CsFSA, LiFSA-KFSA-CsFSA and NaFSA-KFSA-CsFSA, have been constructed. All the ternary systems possess the only one eutectic point around equimolar composition with the temperature of 309-318 K. The electrochemical window of the eutectic LiFSA-KFSA-CsFSA ((x(Li), X-K, x(Cs))= (0.30, 0.35, 0.35)) is as wide as 5.4V at 323 K with the cathode limit being lithium metal deposition. The electrochemical window of the eutectic NaFSA-KFSA-CsFSA ((x(Na), X-K, x(Cs))= (0.40, 0.25, 0.35)) is 4.9V at 323 K with sodium metal deposition as the cathode limit reaction. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：320 / 324
页数：5
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