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:
Aug. 05, 2014
Filed:
Apr. 30, 2009
Hideo Sakata, Osaka, JP;
Fusaji Kita, Osaka, JP;
Kumiko Ishizuka, Osaka, JP;
Akiko Kuwabara, Gunma, JP;
Yuan Gao, Gunma, JP;
Hideo Sakata, Osaka, JP;
Fusaji Kita, Osaka, JP;
Kumiko Ishizuka, Osaka, JP;
Akiko Kuwabara, Gunma, JP;
Yuan Gao, Gunma, JP;
Hitachi Maxell, Ltd., Ibaraki-Shi, Osaka, JP;
Kanto Denka Kogyo Co., Ltd., Tokyo, JP;
Abstract
In the nonaqueous secondary battery of the present invention, a positive electrode mixture layer included in a positive electrode contains a lithium-containing complex oxide defined by the general formula LiMMMO(where, Mrepresents at least one transition metal element selected from the group consisting of Co, Ni and Mn, Mrepresents at least one metal element selected from the group consisting of Mg, Ti, Zr, Ge, Nb, Al and Sn, Mrepresents an element other than Li, Mand M, 0.97≦x<1.02, 0.8≦y<1.02, 0.002≦z≦0.05, and 0≦v≦0.05) and has a density of 3.5 g/cmor more. A nonaqueous electrolyte contains a fluorinated nitrile compound including two or more cyano groups or a cyano group and an ester group.