The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 2017
Filed:
Mar. 07, 2014
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Atsushi Fukunaga, Osaka, JP;
Shinji Inazawa, Osaka, JP;
Koji Nitta, Osaka, JP;
Shoichiro Sakai, Osaka, JP;
Eiko Imazaki, Osaka, JP;
Koma Numata, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Abstract
Provided is a sodium molten-salt battery having good charge-discharge cycle characteristics. The sodium molten-salt battery includes a positive electrode that contains a positive electrode active material, a negative electrode that contains a negative electrode active material, and a molten-salt electrolyte that contains a sodium salt and an ionic liquid that dissolves the sodium salt. The negative electrode active material contains non-graphitizable carbon. The ionic liquid is a salt of a bis(sulfonyl)imide anion and a first onium cation that does not cause a Faradaic reaction with the non-graphitizable carbon. The molten-salt electrolyte contains a second onium cation in an amount of 1,000 ppm by mass or less. The second onium cation is represented by a general formula (1): RRRRNwhere Rto Rare each independently a hydrogen atom or a methyl group.