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:
Aug. 27, 2024
Filed:
Mar. 12, 2021
Ngk Insulators, Ltd., Nagoya, JP;
Yukinobu Yura, Nagoya, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
Provided is a lithium secondary battery including: a positive electrode plate that is a lithium complex oxide sintered plate with a thickness of 50 μm or more; a negative electrode plate; a separator interposed therebetween; and an electrolytic solution. The sintered plate has a structure in which primary grains having a layered rock-salt structure are bound to each other, the lithium complex oxide has a composition represented by Li(CoM)O, wherein 1.0≤x≤1.1, 0<y≤0.8, and 0≤δ<1 are satisfied, and M is at least one selected from Mg, Ni, Al, Ti, and Mn, and the primary grains have a mean tilt angle of over 0° and 30° or less. The mean tilt angle is a mean value of angles defined by (003) planes of the primary grains and the plate face of the sintered plate.