Hydrogen production membranes of SeCe0.95Tb0.05O 3-δ are synthesized using the liquid-phase method. The membranes are of perovskite-type structure with mixed ionic-electronic conductivities. The membranes are dense providing 100% hydrogen selectivity. Hydrogen permeability is studied as a function of temperature, hydrogen partial pressure, hydrogen dry conditions, and water vapor pressure. Also, the influence of nickel deposition on hydrogen flux is evaluated
