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:
Mar. 03, 2015
Filed:
Mar. 09, 2011
Wataru Ogihara, Kawasaki, JP;
Atsushi Itou, Ebina, JP;
Tomokazu Yamane, Kyoto, JP;
Fumihiro Haga, Zushi, JP;
Wataru Ogihara, Kawasaki, JP;
Atsushi Itou, Ebina, JP;
Tomokazu Yamane, Kyoto, JP;
Fumihiro Haga, Zushi, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
Disclosed is a lithium ion secondary battery having a positive electrode, a negative electrode and a non-aqueous electrolyte composition (electrolytic solution), characterized in that: the positive electrode includes a positive electrode active material represented by: aLi[LiM1]O.(1−a)LiM2O(where M1 represents at least one kind of metal element selected from the group consisting of Mn, Ti, Zr and V; M2 represents at least one kind of metal element selected from the group consisting of Ni, Co, Mn, Al, Cr, Fe, V, Mg and Zn; and a represents a composition ratio and satisfies a relationship of 0<a<1); the negative electrode includes a negative electrode active material containing silicon; and the non-aqueous electrolyte composition includes a lithium salt (CFSO)(CFSO)NLi (where m and n each independently represent an integer of 2 or more as a support electrolyte. This lithium ion secondary battery attains a high capacity and good cycle characteristics.