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:
Dec. 29, 2015
Filed:
Jan. 17, 2011
Toshinori Sugimoto, Kyoto, JP;
Tetsuya Higashizaki, Kyoto, JP;
Eriko Ishiko, Kyoto, JP;
Michiyuki Kono, Kyoto, JP;
Masashi Ishikawa, Suita, JP;
Toshinori Sugimoto, Kyoto, JP;
Tetsuya Higashizaki, Kyoto, JP;
Eriko Ishiko, Kyoto, JP;
Michiyuki Kono, Kyoto, JP;
Masashi Ishikawa, Suita, JP;
Dai-Ichi Kogyo Seiyaku Co., Ltd., Kyoto, JP;
A School Corporation Kansai University, Osaka, JP;
Abstract
A flame-retardant lithium secondary battery is provided that has better battery performance and higher safety than conventional batteries. The lithium secondary battery uses a positive electrode that includes a positive electrode active material of the general formula (1) below, and a nonaqueous electrolytic solution in which an ionic liquid that contains bis(fluorosulfonyl)imide anions as an anionic component is used as the solvent, (1) LiNixMnyO, wherein x and y are values that satisfy the relations x+y=2, and x:y=27.572.5 to 22.577.5.