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:
Feb. 14, 2017
Filed:
Sep. 28, 2012
Hitachi Maxell, Ltd., Ibaraki-shi, Osaka, JP;
Ube Industries, Ltd., Ube-shi, Yamaguchi, JP;
Haruki Kamizori, Ibaraki, JP;
Yusuke Nakamura, Ibaraki, JP;
Itaru Gosho, Ibaraki, JP;
Masayuki Yamada, Ibaraki, JP;
Koji Abe, Ube, JP;
Kei Shimamoto, Ube, JP;
HITACHI MAXELL, LTD., Ibaraki-shi, JP;
UBE INDUSTRIES, LTD., Ube-shi, JP;
Abstract
A lithium secondary battery of the present invention includes: a positive electrode; a negative electrode; a nonaqueous electrolytic solution; and a separator. The positive active material contains a lithium-containing composite oxide containing nickel. A molar ratio of a total nickel amount with respect to a total lithium amount contained in the entire positive active material is 0.05 to 1.0. The nonaqueous electrolytic solution contains 0.5 to 5.0 mass % of a phosphonoacetate-based compound represented by the following General Formula (1). In the Formula, R, R, and Rindependently represent an alkyl group, an alkenyl group, or an alkynyl group having 1 to 12 carbon atoms, which may be substituted by a halogen atom, and 'n' represents an integer of 0 to 6.