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:
Jun. 23, 2015
Filed:
Mar. 09, 2011
Toshiharu Shimooka, Osaka, JP;
Itaru Gosho, Osaka, JP;
Akira Inaba, Osaka, JP;
Masayuki Yamada, Osaka, JP;
Kazutaka Matsuo, Osaka, JP;
Satoshi Kono, Osaka, JP;
Toshiharu Shimooka, Osaka, JP;
Itaru Gosho, Osaka, JP;
Akira Inaba, Osaka, JP;
Masayuki Yamada, Osaka, JP;
Kazutaka Matsuo, Osaka, JP;
Satoshi Kono, Osaka, JP;
HITACHI MAXELL, LTD., Ibaraki-shi, Osaka, JP;
Abstract
A lithium secondary battery positive electrode according to the present invention is a lithium secondary battery positive electrode including a positive electrode material mixture layer containing a positive electrode active material and a conductivity enhancing agent on one or both sides of a current collector, wherein the positive electrode active material contains a lithium-containing composite oxide, the conductivity enhancing agent contains carbon fibers having an average fiber length of 10 nm or more and less than 1000 nm and an average fiber diameter of 1 nm or more and 100 nm or less, and the content of the carbon fibers in the positive electrode material mixture layer is 0.25 mass % or more and 1.5 mass % or less.