Impact of Nickel agglomeration on Solid Oxide Cell operated in fuel cell and electrolysis modes
| Autor: | Bertrand Morel, F. Lefebvre-Joud, Maxime Hubert, Jérôme Laurencin, Dario Montinaro, Peter Cloetens |
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| Přispěvatelé: | Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux (LITEN), Institut National de L'Energie Solaire (INES), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), European Synchrotron Radiation Facility (ESRF), SOLIDPower SpA, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), LAURENCIN, Jérome |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
020209 energy Oxide Energy Engineering and Power Technology Sintering chemistry.chemical_element 02 engineering and technology tomography Electrochemistry 7. Clean energy law.invention modelling chemistry.chemical_compound law Ni coarsening 0202 electrical engineering electronic engineering information engineering SOFC Electrical and Electronic Engineering Physical and Theoretical Chemistry Yttria-stabilized zirconia [CHIM.MATE] Chemical Sciences/Material chemistry Electrolysis Renewable Energy Sustainability and the Environment [CHIM.MATE]Chemical Sciences/Material chemistry Nickel chemistry Chemical engineering Electrode SOEC Triple phase boundary |
| Zdroj: | Journal of Power Sources Journal of Power Sources, Elsevier, 2018 Journal of Power Sources, 2018 |
| ISSN: | 0378-7753 1873-2755 |
| DOI: | 10.1016/j.jpowsour.2018.06.097 |
| Popis: | International audience; Long-term experiments have been carried out to investigate the impact of Nickel (Ni) coarsening on the performance of Solid Oxide Cell. Durability tests have been performed with H2 electrode supported cells at 850 °C and 750 °C in fuel cell and electrolysis modes. Microstructural changes in the composite electrode of Nickel and Yttria Stabilized Zirconia (YSZ) have been characterized by synchrotron X-ray nanotomography. Analysis of the reconstructions have revealed that Ni coarsening induces a significant decrease of both the density of Triple Phase Boundary lengths (TPBls) and the Ni/gas specific surface area. However, the contact surface between Ni and YSZ is not changed upon operation, meaning the Ni sintering is inhibited by the YSZ backbone. Moreover, the Ni coarsening rate is independent of the electrode polarization. The evolution of TPBls in operation has been fitted by a phenomenological law implemented in an electrochemical model. Simulations have shown that microstructural changes in the H2 electrode explain 30% of the total degradation in fuel cell mode and 25% in electrolysis mode at 850 °C after 1000-2000 h. Moreover, it has been highlighted that the temperature at which the degradation is estimated after the durability experiment plays a major role on the result. |
| Databáze: | OpenAIRE |
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