Application of yttrium doped barium cerate for improvement of the dual membrane SOFC design |
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| Affiliation: | 1. Institute of Electrochemistry and Energy Systems – Bulgarian Academy of Sciences, 10 Acad. G. Bonchev St., 1113 Sofia, Bulgaria;2. Centre des Matériaux, Mines-ParisTech, BP87, 91003 Evry Cedex, France;3. Institute for Energetics and Interphases (IENI-CNR), National Research Council, 6 Via De Marini, 16149 Genova, Italy;4. Department of Chemical and Process Engineering (DICHeP), University of Genova, 10 P. le Kennedy, 16129 Genova, Italy;1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, PR China;2. Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, United Kingdom;1. Advanced Energy Materials Processing Laboratory, Center for Energy Convergence Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea;2. Department of Material Science & Engineering, Korea University, Seoul 136-713, Republic of Korea;1. Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich, Lichtenbergstr. 1, 85747 Garching, Germany;2. Institute of Energy and Climate Research (IEK-3), Forschungszentrum Jülich, D-52425 Jülich, Germany;3. RWTH Aachen University, Faculty of Mechanical Engineering, D-52062 Aachen, Germany;4. Jülich Centre for Neutron Science (JCNS) and Institute for Complex Systems, Forschungszentrum Jülich, D-52425 Jülich, Germany;1. CONICET, Concejo Nacional de Investigaciones Científicas y Técnicas, Argentina;2. Instituto Balseiro, Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Universidad Nacional de Cuyo, Av. E. Bustillo 9500, CP 8400 S.C. de Bariloche, Río Negro, Argentina;3. Comisión Nacional de Energía Atómica, Av. E. Bustillo 9500, CP 8400 S.C. de Bariloche, Río Negro, Argentina |
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| Abstract: | Recently a new design of solid oxide fuel cell (SOFC) named dual membrane fuel cell (dmFC) has been introduced and proved. It is based on the introduction of three independent compartments for hydrogen, oxygen and water, which eliminate the dilution of the fuel or the oxidizer respectively in the SOFC construction or in its proton conducting (pSOFC) modification. Due to the registered sufficient mixed ionic conductivity of BaCe0.85Y0.15O2.925 (BCY15), a simplified modification in respect to shaping technology and construction is introduced. It's performance is better than the one of pSOFC cell produced with the same material and shaping procedure: 76 mW/cm2 (dmFC thickness 1.1 mm) against 71 mW/cm2 (pSOFC thickness 0.66 mm) at 700 °C. Impedance measurements carried out down to 1 mHz ensure information about the water formation and behaviour in the separate central membrane compartment of the dmFC design, which brings to performance improvements, registered also in electrolyser mode of operation. |
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| Keywords: | SOFC Dual membrane fuel cell design Yttrium doped barium cerate Mixed ionic conductivity Impedance spectroscopy |
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