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. 18, 2025
Filed:
Jul. 13, 2018
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Motoharu Saitou, Hyogo, JP;
Takeshi Ogasawara, Hyogo, JP;
Abstract
A positive electrode active material for nonaqueous electrolyte secondary batteries which allows the capacity of nonaqueous electrolyte secondary batteries to be increased and offers a smaller decrease in charge discharge cycle characteristics, and to provide a nonaqueous electrolyte secondary battery having such a positive electrode active material. A positive electrode active material for nonaqueous electrolyte secondary batteries according to the present invention includes a composite oxide containing Li, Ni, Co, Al, W and additive elements M, the proportion of Ni in the composite oxide being not less than 80 mol % relative to the total number of moles of the metal elements except Li, the additive elements M including at least either of an alkaline earth metal element and an alkali metal element except Li, and a tetravalent or higher valent element, the average valence of the additive elements M being not less than 3.6.