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Title: Novel inorganic ionic liquids possessing low melting temperatures and wide electrochemical windows: Binary mixtures of alkali bis(fluorosulfonyl)amides
Authors: Kubota, Keigo
Nohira, Toshiyuki  kyouindb  KAKEN_id  orcid (unconfirmed)
Goto, Takuya
Hagiwara, Rika  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: 野平, 俊之
後藤, 琢也
萩原, 理加
Keywords: Ionic liquid
Lithium battery
Sodium battery
Issue Date: Dec-2008
Publisher: Elsevier BV
Journal title: Electrochemistry Communications
Volume: 10
Start page: 1886
End page: 1888
Abstract: 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 (xLi, xK) = (0.45, 0.55) and, that for NaFSI–KFSI is 330 K at (xNa, xK) = (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.
Rights: © 2008. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
DOI(Published Version): 10.1016/j.elecom.2008.10.001
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