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. 25, 2014
Filed:
Dec. 09, 2010
Kenichi Honoki, Osaka, JP;
Kensuke Nakura, Osaka, JP;
Kenichi Honoki, Osaka, JP;
Kensuke Nakura, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A positive electrode includes a positive electrode current collector, and a positive electrode active material layer formed on the surface of the positive electrode current collector. The positive electrode active material layer includes: a lithium-containing nickel oxide represented by the general formula (1): LiNiCoAlMO, where M is a transition metal (excluding Ni and Co) or the like, 0.8≦x≦1.4, and 0<(p+q+r)≦0.7); and lithium carbonate. The positive electrode active material layer has a high concentration region of the lithium carbonate and a low concentration region of the lithium carbonate. The high concentration region covers 2 to 80% of the total thickness of the positive electrode active material layer, the range starting from the surface thereof. The low concentration region covers the range remaining on the positive electrode current collector side of the positive electrode active material layer.