Investigations on BaTh0.9Gd0.1 O 3 as an Intermediate Temperature Fuel Cell Solid Electrolyte

The perovskite solid electrolyte BaTh 0.9 Gd 0.1 O 3 incorporated into fuel cells possessing the general configuration H 2 (3% H 2 O) Pd/BaTh 0.9 Gd 0.1 O 3 /La 0.9 Sr 0.1 CoO 3 (3% H 2 O), O 2 has been studied. lonic conductivity was found to progressively increase by ≃30% upon passage of current through cells for over a day, with values up to 8.7×10 -2 S cm -1 being found at 550 o C