Patent ID: 7125622
Filing Date: 2006-10-24
Classification: C01G,C01P,H01M,Y02E,Y02P

Abstract:
1. A method of producing an oxide ion conductor, comprising the steps of: obtaining a mixed powder in which a lanthanum compound, a compound of a tetravalent element A, and at least one of a compound of a divalent or tetravalent element X and a compound of a trivalent or pentavalent element Z are mixed in a ratio to produce La forming said mixed powder to obtain a formed product; and sintering said formed product at a temperature of 1450 to 1600° C. to obtain said oxide ion conductor having a crystalline structure which belongs to an apatite type structure and having a composition formula which is represented by La wherein a Ge compound is selected as said compound of element A, a Sr compound or a Zr compound is selected as said compound of element X, and an Al compound or a P compound is selected as said compound of element Z.