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. 11, 2013
Filed:
Nov. 13, 2008
Norihiro Yamamoto, Osaka, JP;
Yutaka Kawatate, Osaka, JP;
Hidekazu Hiratsuka, Osaka, JP;
Takahiro Sakamoto, Osaka, JP;
Norihiro Yamamoto, Osaka, JP;
Yutaka Kawatate, Osaka, JP;
Hidekazu Hiratsuka, Osaka, JP;
Takahiro Sakamoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A positive electrode active material for a non-aqueous electrolyte secondary battery is provided. The positive electrode active material includes a composite oxide containing lithium and metal M other than lithium, and M contains Ni, Mn, and Co. The molar ratio of Ni to the total of Ni, Mn, and Co is from 0.45 to 0.65, and the molar ratio of Mn to the total of Ni, Mn, and Co is from 0.15 to 0.35. The positive electrode active material has a pressed density under a compression of 60 MPa of 3.3 g/cmor more and 4.3 g/cmor less. The positive electrode active material has a volume resistivity under a compression of 60 MPa of 100 Ω·cm or more and less than 1000 Ω·cm.