CATHODE ACTIVE MATERIAL LAYER , ALL SOLID LITHIUM BATTERY, AND MANUFACTURING METHOD OF CATHODE ACTIVE MATERIAL LAYER

摘要

The problem of the present disclosure is to provide a cathode active material layer with low internal resistance. The present disclosure solves the problem by providing a cathode active material layer used for an all solid lithium battery, comprising a flat cathode active material with a hollowness of more than 0% and 10% or less, and a solid electrolyte material, characterized in that the flat cathode active material has an aspect ratio (long axis length/short axis length) of 1.5 or more in a section in a thickness direction of the cathode active material layer, and a ratio of the flat cathode active material of which the short axis direction corresponds to a thickness direction of the cathode active material layer is 30% or more with respect to the whole cathode active material.