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The electrolyte used in a solid oxide fuel cell (SOFC) must be stable in both reducing and oxidizing environments and must have sufficiently high ionic conductivity but low electronic conductivity at the cell operation temperature. If a small amount of electronic conductivity appears, particularly under a reducing atmosphere, then the energy conversion efficiency will decrease because of the consumption...
Oxide groups consisting of two or more different cations are called complex or mixed oxides, and many types of structures are known that are different from those of the simple oxides. In some special cases, oxides consisting of a single cation in different oxidation states are also classified as mixed oxides. For example, Eu3O4, a mixed oxide, consists of Eu(III) and Eu(II) in 6- or 8-coordination,...
The continuing development of fuel cells offers promising technologies for the conversion of chemical energy from hydrocarbon fuels into electricity without forming air pollutants. Perovskite Oxides for Solid Oxide Fuel Cells provides insight into the materials aspects of one of the most promising fuel cell types available. Solid Oxide Fuel Cells (SOFCs) have significant advantages over other fuel...
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