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:
Nov. 10, 2020
Filed:
May. 30, 2012
Satoshi Matsumoto, Ichikawa, JP;
Shuhei Oda, Niihama, JP;
Katsuya Inoue, Niihama, JP;
Hiroyuki Toya, Niihama, JP;
Satoshi Matsumoto, Ichikawa, JP;
Shuhei Oda, Niihama, JP;
Katsuya Inoue, Niihama, JP;
Hiroyuki Toya, Niihama, JP;
Abstract
Provided are a positive electrode active material for nonagueous secondary batteries, the material having a narrow particle-size distribution and a monodisperse property and being capable of increasing a battery capacity; an industrial production method thereof; and a nonaqueous secondary battery using the positive electrode active material and having excellent electrical characteristics. The positive electrode active material is represented by a general formula: LiNiCoMnMO(wherein, 0.05≤u≤0.95, x+y+z+t=1, 0≤x≤0.5, 0≤y≤0.5, 0.5≤z<0.8, 0≤t≤0.1, and M is an additive element and at least one element selected from Mg, Ca, Al, Ti, V, Cr, Zr, Nb, Mo, and W), has an average particle diameter of 3 to 12 um, and has [(d−d)/average particle diameter], an index indicating a scale of particle-size distribution, of 0.60 or less.