HIGH ION-CONDUCTIVITY SOLID ELECTROLYTE MATERIAL AND ITS MANUFACTURING METHOD, SINTERED BODY, AND

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PROBLEM TO BE SOLVED : To provide a high ion-conductivity solid electrolyte material endowed with high oxygen-ion conductivity and high intensity, by stabilizing a crystal phase with addition of specific rare-earth oxide to scandia-stabilized zirconia. SOLUTION : With zirconia as a main ingredient, to which 8.5 to 15 mol% scandia, and 0.5 to 2.5 mol% yttria and/or ceria are blended and dissolved, a total blending volume of scandia and yttria and/or ceria is prepared within the range of 9 to 15 mol% to make up the high ion-conductivity solid electrolyte material. COPYRIGHT : (C)2009, JPO&INPIT