GALLATE COMPLEX OXIDE SOLID ELECTROLYTE MATERIAL AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a gallate complex oxide solid electrolyte, its manufacturing method and solid electrolyte fuel cell with a stable and high oxygen ion conductivity even at low temperature. SOLUTION: The gallate complex oxide solid electrolyte material is a complex oxide expressed in the formula: A1-αBO3-δ, where, α satisfies 0<α<0.2, δsatisfies 0<δ<=0.5, and at least Ga is contained in the B site.