| 摘要 |
PROBLEM TO BE SOLVED: To provide a positive electrode active material layer having a sufficiently high filling factor.SOLUTION: The present invention provides a positive electrode active material layer used for an all-solid lithium battery. The positive electrode active material layer includes: a positive electrode active material of an oxide active material; a sulfide solid electrolyte material; and an inorganic solid material represented by MO(where, M represents a metal element, and x and y each represent an arbitrary number). In the positive electrode active material layer, 12.5≤A/B and 57≤B/C≤67 are satisfied where A, B and C represent average particle sizes of the positive electrode active material, the sulfide solid electrolyte material and the inorganic solid material, respectively, and the content of the inorganic solid material is within a range of 0.05-0.2 wt.%.SELECTED DRAWING: Figure 2 |
