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:
Dec. 16, 2025
Filed:
Jun. 30, 2020
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Panasonic Corporation, Kadoma, JP;
Yuki Koshika, Niihama, JP;
Haruki Kaneda, Niihama, JP;
Sho Tsuruta, Kadoma, JP;
Takashi Ko, Kadoma, JP;
Fumiharu Niina, Kadoma, JP;
SUMITOMO METAL MINING CO., LTD., Tokyo, JP;
PANASONIC HOLDINGS CORPORATION, Osaka, JP;
Abstract
The positive electrode active material for a lithium ion secondary battery contains a lithium-nickel-manganese composite oxide, in which metal elements constituting the lithium-nickel-manganese composite oxide include lithium (Li), nickel (Ni), manganese (Mn), cobalt (Co), titanium (Ti), niobium (Nb), and optionally zirconium (Zr), an amount of substance ratio of the elements is represented as Li: Ni: Mn: Co: Zr: Ti: Nb =a: b: c: d: e: f: g (provided that, 0.97≤a≤1.10, 0.80≤b≤0.88, 0.04≤c≤0.12, 0.04≤d≤0.10, 0≤e≤0.004, 0.003<f≤0.030, 0.001<g≤0.006, and b+c+d+e+f+g=1), and in the amount of substance ratio, (f+g)≤0.030 and f>g are satisfied.