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:
Apr. 14, 2015
Filed:
Jun. 21, 2013
Hitachi Maxell, Ltd., Otokuni-gun, Kyoto, JP;
Yuta Kawamoto, Ibaraki, JP;
Haruki Kamizori, Ibaraki, JP;
Yusuke Nakamura, Ibaraki, JP;
Masayuki Yamada, Ibaraki, JP;
Itaru Gosho, Ibaraki, JP;
Hitachi Maxell, Ltd., Osaka, JP;
Abstract
There is provided a lithium secondary battery including a positive electrode, a negative electrode, a nonaqueous electrolyte liquid and a separator, that is subjected to a constant-current constant-voltage charge with a stop voltage of more than 4.25V before its use. The lithium secondary battery uses the nonaqueous electrolyte liquid having contained 0.1 to 5 mass % of a phosphonoacetate compound represented by the following general formula (1), and having contained 0.1 to 5 mass % of 1,3-dioxane. In General Formula (1), each of R, Rand Ris independently hydrocarbon groups having a carbon number of 1 to 12 with or without substituent of a halogen atom, and n is 0 to 6 integers.