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:
May. 23, 2017
Filed:
Apr. 29, 2015
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Abstract
A lithium secondary battery includes: a positive electrode including a positive-electrode active material layer; a negative electrode including a negative-electrode active material layer; and an ion conductor being lithium ion conductive and interposed between the positive electrode and the negative electrode. The positive-electrode active material layer is composed of lithium cobaltate, and has an α-NaFeOtype crystal structure. The positive-electrode active material layer is composed only of first regions oriented in the (110) plane and second regions oriented in the (018) plane, the first regions and the second regions being mixedly present in the xy plane of the positive-electrode active material layer, where x and y axes are defined as two axes that are parallel to the principal face of the positive-electrode active material layer, and a z axis is defined as an axis perpendicular to the principal face.