NaFSA-C1C3pyrFSA ionic liquids for sodium secondary battery operating over a wide temperature range

被引：125

作者：

Ding, Changsheng ^{[1
]}

Nohira, Toshiyuki ^{[1
]}

Kuroda, Keisuke ^{[1
]}

Hagiwara, Rika ^{[1
]}

Fukunaga, Atsushi ^{[1
,2
]}

Sakai, Shoichiro ^{[2
]}

Nitta, Koji ^{[2
]}

Inazawa, Shinji ^{[2
]}

机构：

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

[2] Sumitomo Elect Ind Ltd, Elect & Mat R&D Labs, Konohana Ku, Osaka 5540024, Japan

来源：

JOURNAL OF POWER SOURCES | 2013年 / 238卷

基金：

日本学术振兴会; 日本科学技术振兴机构;

关键词：

Sodium secondary battery; Ionic liquid; N-Methyl-N-propylpyrrolidinium; Bis(fluorosulfonyl)amide; NaCrO2; POSITIVE ELECTRODE; ELECTROCHEMICAL PROPERTIES; CARBON; NACRO2; PERFORMANCE; CHALLENGES; DENSITY; CATHODE;

D O I：

10.1016/j.jpowsour.2013.03.089

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The physicochemical properties of NaFSA-C(1)C(3)pyrFSA ionic liquids were investigated to explore their potential as new electrolytes for sodium secondary batteries operating over a wide temperature range. The viscosity and ionic conductivity of NaFSA-C(1)C(3)pyrFSA with a molar ratio of 2:8 were 16.7 cP and 15.6 mS cm(-1), respectively, at 353 K. The electrochemical window of this ionic liquid was 5.2 V at 353 K with sodium metal deposition determining the cathode limit. A Na/NaFSA-C(1)C(3)pyrFSA/NaCrO2 cell exhibited stable charge-discharge behaviour at 298 and 353 K. The discharge capacities of 92 and 106 mAh (g-NaCrO2)(-1) were observed at 298 and 353 K, respectively, at 20 mA g(-1). The Coulombic efficiency was higher than 99% during the charge-discharge tests except for the initial few cycles. The cell also showed high discharge rates, reaching 500 mA g(-1) at 353 K. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：296 / 300

页数：5

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