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

被引：77

作者：

Kubota, Keigo ^{[1
]}

Nohira, Toshiyuki ^{[1
]}

Goto, Takuya ^{[1
]}

Hagiwara, Rika ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Energy Sci, Sakyo Ku, Kyoto 6068501, Japan

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 12期

关键词：

Ionic liquid; FSI; Bis(fluorosulfonyl)amide; Lithium battery; Sodium battery; Electrodeposition;

D O I：

10.1016/j.elecom.2008.10.001

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Thermal properties of alkali bis(fluorosulfonyl)amides, MFSI (M = Li, Na, K, Rb, Cs), have been investigated. Binary phase diagrams of LiFSI-KFSI and NaFSI-KFSI systems have been constructed. Eutectic point for LiFSI-KFSI is 338 K at (X-Li,X-K) = (0.45,0.55) and, that for NaFSI-KFSI is 330 K at (X-Na,X-K) = (0.45,0.55). The electrochemical window of the eutectic LiFSI-KFSI is as wide as 6.0 V at 348 K with the cathode limit being lithium metal deposition. The electrochemical window of the eutectic NaFSI-KFSI is 5.0 V at 340 K with sodium metal deposition at the cathode limit. These new inorganic ionic liquids are highly promising for various electrochemical applications. (C) 2008 Elsevier B.V. All rights reserved.

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页码：1886 / 1888

页数：3

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