Ni-GDC and Ni-YSZ electrodes operated in solid oxide electrolysis and fuel cell modes

DOI Web Site 5 Citations 25 References
  • SCIAZKO Anna
    Institute of Industrial Science, the University of Tokyo Department of Fundamental Research in Energy Engineering, AGH University of Science and Technology
  • SHIMURA Takaaki
    Institute of Industrial Science, the University of Tokyo Tokyo University of Agriculture and Technology
  • KOMATSU Yosuke
    Institute of Industrial Science, the University of Tokyo Department of Engineering Science and Mechanics, Shibaura Institute of Technology
  • SHIKAZONO Naoki
    Institute of Industrial Science, the University of Tokyo

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<p>In the present study, solid oxide cells (SOCs) were operated in the electricity generation (solid oxide fuel cell, SOFC) mode and the hydrogen production (solid oxide electrolysis cell, SOEC) mode. The fuel electrodes fabricated with nickel-gadolinia doped ceria (Ni-GDC) and nickel-yttria stabilized zirconia (Ni-YSZ) composites were investigated. The correlations between changes in the microstructure and degradation of electrochemical performance are discussed. The degradation mechanisms correlated with Ni phase were found to be similar for Ni-GDC and Ni-YSZ electrodes. On the other hand, the stability of the ceramic phase differs significantly between the two electrode materials.</p>

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