Advances in alternative metal oxide materials of various structures for electrochemical and catalytic applications

Recent directions concerning hydrogen production, storage and utilization result in growing the demand for efficient technologies, a huge part of which is connected with the application of materials based on complex oxides as efficient catalysts for the fuel reforming, permselective membranes, components of solid oxide fuel cells and electrolyzers. These materials are generally based on the oxides with perovskite and fluorite structures or their derivatives. On the other hand, other classes of materials are recently considered as promising materials for these applications due to their peculiar functional characteristics or an outstanding potential of their improvement. They include a variety of types of rare earth element tungstates/molybdates, Co and Ba cobalitites with layered structure as well as other materials including langasites, magnetoplumbites, swedenborgites, etc., and composites based on them. In this work, structural, transport features and performance of such modern materials are reviewed.