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:
Oct. 24, 2017
Filed:
Apr. 29, 2015
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Abstract
An exemplary lithium secondary battery includes: a positive electrode including a positive-electrode active substance layer; a negative electrode; and a solid electrolyte layer. The positive-electrode active substance layercomprises lithium cobaltate, and has an α-NaFeOtype crystal structure. The positive-electrode active substance layerincludes a lower layer, and an upper layerinterposed between the lower layer and the solid electrolyte layer. The lower layeris oriented in the (110) plane. The upper layeris composed only of first regionsoriented in the (110) plane and second regionsoriented in the (018) plane, the first and second regions being mixedly present in the xy plane of the positive-electrode active substance layer. The solid electrolyte layercomprises lithium lanthanum titanate, and has a tetragonal perovskite-type crystal structure. The solid electrolyte layeris oriented in the (110) or (102) plane.