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. 23, 2016
Filed:
Jun. 22, 2011
Lithium secondary battery and cathode of the lithium secondary battery with conductive bonding layer
Ryuta Sugiura, Nagoya, JP;
Nobuyuki Kobayashi, Nagoya, JP;
Tsutomu Nanataki, Toyoake, JP;
Masaya Ugaji, Osaka, JP;
Kaoru Nagata, Osaka, JP;
Ryuta Sugiura, Nagoya, JP;
Nobuyuki Kobayashi, Nagoya, JP;
Tsutomu Nanataki, Toyoake, JP;
Masaya Ugaji, Osaka, JP;
Kaoru Nagata, Osaka, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
To provide a lithium secondary battery which has high capacity while maintaining excellent cycle characteristic. The lithium secondary battery cathode of the present invention includes a cathode collector formed of a conductive substance, and a cathode active material layer formed of a sintered lithium composite oxide sheet. The cathode active material layer is bonded to the cathode collector by the mediation of a conductive bonding layer. A characteristic feature of the present invention resides in that the cathode active material layer has a thickness of 30 μm or more, a mean pore size of 0.1 to 5 μm, and a voidage of 3% or more and less than 15%.