Oxygen ion conductors for fuel cells and membranes: selected developments |
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| Institution: | 1. Department of Physics, Boise State University, 1910 University Dr., Boise, ID, USA;2. Department of Material Science and Engineering, Boise State University, 1910 University Dr., Boise, ID, USA;3. Center for Advanced Energy Studies, 995 University Blvd., Idaho Falls, ID, USA |
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| Abstract: | Recent developments on single-phase and composite materials with oxygen ionic conductivity are briefly reviewed. Attention is focused on electrolytes with apatite-like structure, yttria-stabilized zirconia (YSZ) ceramics containing silica and apatite admixtures, and composite mixed conductors where chemical interaction of the components is large or severely constrained. The results show, in particular, a key role of phase interaction and microstructural design on materials performance. The ideas behind the adopted procedures can be extended to other systems and combinations of properties based on thermodynamic equilibria information. |
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