Cuspidine-type Solid Oxides for Fuel Cell applications

Abstract

Cuspidine-type solid oxides having the compositions La₄(Ti₂O₈)O₂ and La₄(Ti_1.5Al_0.5O_8-δ)O₂ were synthesized using a modified Pechini method at much lower temperature than the one corresponding to the state of the art ceramic method. Their thermal behaviour was evaluated using TG/DSC techniques. Reduction-oxidation processes were evidenced on both heating and cooling stages, their amplitude depending on gas atmosphere and sample composition.