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:
Mar. 11, 2025
Filed:
Jun. 30, 2020
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Yuki Koshika, Niihama, JP;
Haruki Kaneda, Niihama, JP;
PANASONIC ENERGY CO., LTD., Osaka, JP;
SUMITOMO METAL MINING CO., LTD., Tokyo, JP;
Abstract
The positive electrode active material for a lithium ion secondary battery contains a lithium-nickel composite oxide, in which the lithium-nickel composite oxide contains lithium, nickel, manganese, titanium, niobium, and optionally an element M1, an amount of substance ratio of the respective elements is represented as Li:Ni:Mn:M:Ti:Nb=a:(1−x1−y1−b−c):x1:y1:b:c (provided that, 0.95≤a≤1.25, (1−x1−y1−b−c)<0.80, 0.03≤x1≤0.35, 0≤y1≤0.35, 0.005≤b≤0.05, and 0.001<c≤0.03), in the amount of substance ratio, (b+c)≤0.06 and b>c are satisfied, and an amount of lithium to be eluted in water is 0.07% by mass or less.