Patent ID: 8580456

Claim:
A scandia stabilized zirconia electrolyte composition for a solid oxide fuel cell, comprising a formula (ZrO 2 ) 1-w-x-a-b (Sc 2 O 3 ) w (CeO 2 ) x (Y 2 O 3 ) a (Yb 2 O 3 ) b , where 0.09≦w≦0.11; 0<x≦0.025; a+b=z; 0≦z≦0.025; and x+z≧0.02, wherein: w=0.1; x=0.01; and z=0.01; and the composition comprises zirconia containing 10 mol % Sc 2 O 3 , 1 mol % CeO 2 and 1 mol % Y 2 O 3 .