Patent ID: 9660264
Date: 2017-05-23
CPC Classifications: H01M,Y02E,Y02T

Claim:
1. A lithium secondary battery comprising: a positive electrode including a positive-electrode active material layer; a negative electrode including a negative-electrode active material layer, the negative-electrode active material layer allowing lithium ions to be inserted and allowing inserted lithium ions to be released; and an ion conductor interposed between the positive electrode and the negative electrode, the ion conductor being lithium ion conductive, wherein, the positive-electrode active material layer comprises lithium cobaltate, and has an α-NaFeO 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 second regions being mixedly present in an xy plane of the positive-electrode active material layer, where an x axis and a y axis which are defined as two axes that are parallel to a principal face of the positive-electrode active material layer, and a z axis which is defined as an axis that is perpendicular to the principal face.