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. 15, 2020
Filed:
Jun. 20, 2016
Nec Energy Devices, Ltd., Sagamihara-shi, Kanagawa, JP;
Masaaki Matsuu, Kanagawa, JP;
Envision AESC Energy Devices Ltd., Sagamihara-shi, Kanagawa, JP;
Abstract
A positive electrode active material of the present invention is used for a positive electrode for a lithium-ion secondary battery and includes a positive electrode active material particle A expressed by General Formula (A): LiNiCoMnO(where 0<α≤1.15, 0.7≤x≤0.9, 0<y≤0.2, and 0<(1−x−y)); and one kind or two or more kinds of positive electrode active material particles B selected from a positive electrode active material particle Bexpressed by General Formula (B): LiNiCoAlO(where 0<β≤1.15, 0.7≤a≤0.9, 0<b≤0.2, and 0<(1−a−b)), a positive electrode active material particle Bexpressed by General Formula (B): LiNiCoMnO(where 0<β≤1.15, 0.2≤a≤0.6, 0<b≤0.8, and 0<(1−a−b)), a positive electrode active material particle Bexpressed by General Formula (B): LiMnMeO(where 0<β≤1.0, 0≤γ≤0.3, 0≤a≤0.5, and Me is one kind or two or more kinds selected from Li, B, Mg, Al, Fe, Co, and Ni), and a positive electrode active material particle Bexpressed by General Formula (B): LiMPO(where 0<β≤1.15 and M is one kind or two or more kinds selected from Fe, Co, Ni, Mn, and Cu).