SOLID ELECTROLYTE CELL AND POSITIVE ELECTRODE ACTIVE MATERIAL

摘要

The present invention provides: a solid electrolyte cell that uses a positive electrode active material with high ion conductivity in an amorphous state; and the positive electrode active material with high ion conductivity in an amorphous state. The solid electrolyte cell has a laminate with a positive electrode-side collector film, the positive electrode active material, a solid electrolyte film, a negative electrode potential formation layer, and a negative electrode-side collector film formed, in that order, on top of a substrate. The positive electrode active material is formed using an amorphous-state lithium phosphate compound that contains O and any element (M1) selected from Li, P, Ni, Co, Mn, Au, Ag, and Pd.