Abstract
High temperature proton conductors (HTPCs) have a wide range of applications and the most important are electrolytes for solid oxide fuel cells (SOFCs) and membranes for hydrogen separation. Among these materials doped barium cerates BaCe1-xYxO3-´ (BCY) have show the highest proton conductivities, but these materials are not stable in CO2 at intermediate temperatures. This instability of …