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:
Jul. 29, 2025
Filed:
Jul. 28, 2020
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Abstract
This positive electrode has a positive electrode collector and a positive electrode mixture layer formed on the surface of the positive electrode collector. The positive electrode mixture layer contains a lithium transition metal composite oxide containing 85 mol % or more of Ni and 1-15 mol % inclusive of Al relative to the total number of moles of metal elements other than Li, and in which the total amount of Ni, Al, and Mn contained is 99.9 mol % or more. The density of the positive electrode active material in the positive electrode mixture layer is 3.45 g/cmor higher. In an observation of a cross-section of the positive electrode using a scanning electron microscope, the proportion of the cross-section area of the lithium transition metal composite oxide devoid of cracks relative to the cross-section area of the lithium transition metal composite oxide exposed on the cross-section is 51% or higher.