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. 17, 2010
Filed:
Nov. 01, 2005
Akihiro Taniguchi, Ashiya, JP;
Kohei Suzuki, Yao, JP;
Shuji Tsutsumi, Ikoma, JP;
Mitsuhiro Takeno, Settsu, JP;
Kozo Watanabe, Katano, JP;
Takashi Takeuchi, Hirakata, JP;
Takaya Saito, Utsunomiya, JP;
Akihiro Taniguchi, Ashiya, JP;
Kohei Suzuki, Yao, JP;
Shuji Tsutsumi, Ikoma, JP;
Mitsuhiro Takeno, Settsu, JP;
Kozo Watanabe, Katano, JP;
Takashi Takeuchi, Hirakata, JP;
Takaya Saito, Utsunomiya, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Disclosed is a non-aqueous electrolyte secondary battery having an electrode group in which a positive electrode and a negative electrode are spirally wound with a separator interposed therebetween. The positive electrode contains a positive electrode active material and a binder. The positive electrode active material contains a mixture of two different particulate substances having different average particle sizes. The two different particulate substances are lithium composite metal oxides containing nickel as an essential element. The binder includes fluorocarbon resin and rubber particles. The fluorocarbon resin contains at least a vinylidene fluoride unit. The amount of the rubber particles per 100 parts by weight of the fluorocarbon resin is 1 to 25 parts by weight.