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:
Apr. 21, 2025
Filed:
Sep. 28, 2020
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Abstract
This positive electrode active material for nonaqueous electrolyte secondary batteries includes a lithium transition metal complex oxide that has a spinel structure and that is represented by general formula LiNiMnGeMO(in the formula, 0≤α<0.2, 0≤x<0.2, 0<y<0.45, and 0≤z<0.2 are satisfied, and M represents at least one element selected from the group consisting of Mg, Al, Sc, Ti, Cr, V, Fe, and Co). In a secondary particle of the lithium transition metal complex oxide, the mole number (Ge) of Ge at the surface portion when the total number of moles of metal elements other than Li is defined as 2 is larger than the mole number (Ge) of Ge at the center portion when the total number of moles of metal elements other than Li is defined as 2.