CERAMIC POSITIVE ELECTRODE-SOLID ELECTROLYTE ASSEMBLY

摘要

PROBLEM TO BE SOLVED: To provide a positive electrode-solid electrolyte assembly with low resistance.SOLUTION: A ceramic positive electrode-solid electrolyte assembly comprises: a plate-like positive electrode made of a ceramic sintered compact containing a positive electrode active material with a layered rock salt type structure; a solid electrolyte with lithium ion conductivity; and an interface layer positioned between the plate-like positive electrode and the solid electrolyte, and consisting of a lithium ion conductive complex oxide represented by a formula (LaLi)(NbO)(3x+y=2,0.40≤x≤0.54 and 0.38≤y≤0.80).