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:
Nov. 30, 2021
Filed:
Aug. 07, 2019
Ngk Insulators, Ltd., Nagoya, JP;
Yukinobu Yura, Nagoya, JP;
Nobuyuki Kobayashi, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
Disclosed is a lithium complex oxide sintered plate for use in a positive electrode of a lithium secondary battery. The lithium complex oxide sintered plate has a structure where a plurality of primary grains having a layered rock-salt structure are bonded, and has a porosity of 3 to 30%, a mean pore diameter of 15 μm or less, an open pore rate of 70% or more, and a thickness of 40 to 200 μm. The primary grains have a primary grain diameter of 20 μm or less, the primary grain diameter being a mean diameter of the primary grains, and a pore diameter distribution includes a first peak corresponding to a pore diameter of more than 0 μm to 1.2 μm or less and a second peak corresponding to a pore diameter which is larger than the pore diameter corresponding to the first peak and is 20 μm or less.