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:
Sep. 09, 2008
Filed:
Apr. 30, 2003
Shinji Arimoto, Osaka, JP;
Takahiro Okuyama, Naga-gun, JP;
Masatoshi Nagayama, Hirakata, JP;
Hiroshi Yoshizawa, Hirakata, JP;
Shinji Arimoto, Osaka, JP;
Takahiro Okuyama, Naga-gun, JP;
Masatoshi Nagayama, Hirakata, JP;
Hiroshi Yoshizawa, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A positive electrode active material for a non-aqueous electrolyte secondary battery includes a particle of a composite oxide which contains Li and Co, wherein: the composite oxide further contains an element Mand an element M; the element Mis at least one selected from the group consisting of Mg, Cu and Zn; the element Mis at least one selected from the group consisting of Al, Ca, Ba, Sr, Y and Zr; the element Mis uniformly distributed in the particle; and the element Mis distributed in the surface portion of the particle more than in the inside thereof.