A positive electrode material according to the present disclosure includes a mixture of a positive electrode active material, a solid electrolyte, and a conductive material. A ratio of a volume of the positive electrode active material to a sum of the volume of the positive electrode active material and a volume of the solid electrolyte is 50% or more and 90% or less. In the positive electrode material, 30≤X≤80 is satisfied, where X is a value determined by the following equation (1): X=A×B Equation (1). In the equation (1), A is a BET specific surface area (m2/g) of the conductive material, and B is a ratio (%) of a mass (g) of the conductive material to a mass (g) of the positive electrode active material.