SOLID ELECTROLYTE MATERIAL AND BATTERY USING SAME

A solid electrolyte material of the present disclosure includes Li, Zr, Y, Cl, and O, the molar ratio of O to Y in the entire solid electrolyte material is greater than 0 and less than or equal to 0.80, and the molar ratio of O to Y in the surface region of the solid electrolyte material is larger than the molar ratio of O to Y in the entire solid electrolyte material. A battery 1000 of the present disclosure includes a positive electrode 201, a negative electrode 203, and an electrolyte layer 202 disposed between the positive electrode 201 and the negative electrode 203. At least one selected from the group consisting of the positive electrode 201, the negative electrode 203, and the electrolyte layer 202 contains the solid electrolyte material of the present disclosure.