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. 10, 2013
Filed:
Jun. 26, 2012
Noriyuki Shimizu, Moriguchi, JP;
Hideki Kitao, Sakaiminato, JP;
Yoshinori Kida, Moriguchi, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A non-aqueous electrolyte secondary battery has a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a non-aqueous electrolyte. The positive electrode active material includes a lithium-nickel-manganese composite oxide having a hexagonal layered rock-salt structure that belongs to the space group R-3m, and contains lithium in 3b sites that contain transition metals. The lithium-nickel-manganese composite oxide is represented by the molecular formula Li[LiNiMnM]O, where: 0.2<x<0.4, 0.12<y<0.5, 0.3<z<0.62, and 0≦a<0.5; M is at least one of Mg, Al, Zr, Ti, Nb, W, and Mo; and variables x, y, z, and b satisfy the expressions x>(1−2y)/3, ¼≦y/z≦1.0, 0<b/(y+z)≦0.1, and 1.0≦x+y+z+b≦1.1.