A method for the replacement of sodium ions by means of potassium ions in a crystalline structure, which a lattice structure and sodium ions, we

摘要

1,201,250. Alumina ionic conductors. FORD MOTOR CO. Ltd. 21 Nov., 1967 [21 Nov., 1966], No. 52850/67. Heading ClJ. [Also in Division HI] Sodium ions in a crystalline structural lattice composed of a major proportion of Al +++ and O + + are substituted by K ions by heating the lattice above 900‹ C., contacting the lattice with a source of K ion heated to the same temperature, and maintaining both the lattice and the K ion source above 900‹ C. until at least 50% substitution has occurred. Preferred temperature is 1000-1400‹ C. The product is used in a cell generating electricity.