First Author & Corresponding Author (Hirofumi Sumi)

2025

• 44) H. Sumi, M. Momai and Y. Tanaka, "Effect of Gas Diffusivity in Fuel Electrode on Initial Durability for Solid Oxide Cells during Steam/CO₂ Coelectrolysis", ChemSusChem, 18 (2025) e202501182.
  https://doi.org/10.1002/cssc.202501182
• 43) H. Sumi, M. Momai, Y. Tanaka and T. Matsui, "Reduced Gas Diffusion Resistance via Modification of Negatrode Morphology for Steam/CO₂ Co-electrolysis SOEC", Electrochem. Commun., 179 (2025) 108022.
  https://doi.org/10.1016/j.elecom.2025.108022
• 42) H. Sumi, H. Shimada, Y. Yamaguchi, M. Fujioka, M. Momai, K. Sato, M. Yamaguchi, R. A. Budiman and T. Kawada, "Effect of Noble Metallic Current Collectors and Contact Layers on Power Density and Polarization Resistance of Planar Solid Oxide Fuel Cells", Int. J. Hydrogen Energy, 127 (2025) 286-294.
  https://doi.org/10.1016/j.ijhydene.2025.04.153
• 41) H. Sumi, K. Watanabe, A. Sharma, M. Fujioka, H. Shimada, Y. Mizutani, M. S. Alam and I. Kagomiya, "Oxygen Reduction Kinetics of High Performance BaCo_0.4Fe_0.4M_0.1Y_0.1O_3-δ (M = Mg, Zr) Positrode for Protonic Ceramic Fuel Cells", Commun. Chem., 8 (2025) 71.
  https://doi.org/10.1038/s42004-025-01468-4

• az) H. Sumi and Y. Yamaguchi, "Development Trends of Metal-supported SOFC/SOEC", SOFC/SOEC Techinologies for Carbon Neutrality -From Fundamentals to System Applications Including Thermal Integration-, Tohoku University SOFC/SOEC Social Implementation Center Ed., CMC Research, (2025) 290-297 .
  https://cmcre.com/archives/140198/
• ay) H. Sumi, "Electrochemical Impedance Analysis Using Distribution of Relaxation Times Method", SOFC/SOEC Techinologies for Carbon Neutrality -From Fundamentals to System Applications Including Thermal Integration-, Tohoku University SOFC/SOEC Social Implementation Center Ed., CMC Research, (2025) 185-194.
  https://cmcre.com/archives/140198/
• ax) H. Sumi, Y. Okuyama and T. Matsui, "Issues of Proton-conductive Ceramic Electrolytes", J. Fuel Cell Technol., 24(4) (2025) 55-61.
  https://www.fcdic.jp/pdf/toukouronbun/toukou52.pdf