TY - JOUR
T1 - Improvement of the internal reforming of metal-supported SOFC at low temperatures
AU - Miura, Yohei
AU - Takemiya, Satoshi
AU - Fukuyama, Yosuke
AU - Kato, Takashi
AU - Taniguchi, Shunsuke
AU - Sasaki, Kazunari
N1 - Funding Information:
The authors express their appreciation to Yoshinori Tanaka and Tadahiko Tokuda in Nissan Research Center for fabricating button cell. We would also like to thank Isao Yamashita and Shihomi Okabe in Sumika Chemical Analysis Service for their microstructure analysis using FE-SEM and STEM-EDX.
Publisher Copyright:
© 2023 Hydrogen Energy Publications LLC
PY - 2023
Y1 - 2023
N2 - Automotive Solid oxide fuel cells (SOFCs) require improvements in mechanical robustness, power generation at low temperatures, and system compactness. To address these issues, we attempt to improve the internal reformation of metal-supported SOFCs (MS-SOFCs) via catalyst infiltration. After introducing nickel/gadolinium-doped ceria (Ni/GDC) nanoparticles, power densities of 1.16 Wcm−2 with hydrogen (3%H2O) and 0.85 Wcm−2 with methane (Steam-to-Carbon ratio, S/C = 1.0) are obtained at 600 °C, 0.7 V. This is the highest performance achieved in previous studies on MS-SOFCs. Internal reforming with various hydrocarbon is also demonstrated. In particular 0.64 Wcm−2 at 600 °C, 0.7 V is obtained when the fuel is iso-octane. We develop a numerical model to separately analyze reforming and electrochemical reaction. Catalyst infiltration dramatically increases the number of active sites for steam reforming. In addition, ruthenium/gadolinium-doped ceria (Ru/GDC) should be suitable as a catalyst metal at low temperatures because of the lower activation energy of steam reforming.
AB - Automotive Solid oxide fuel cells (SOFCs) require improvements in mechanical robustness, power generation at low temperatures, and system compactness. To address these issues, we attempt to improve the internal reformation of metal-supported SOFCs (MS-SOFCs) via catalyst infiltration. After introducing nickel/gadolinium-doped ceria (Ni/GDC) nanoparticles, power densities of 1.16 Wcm−2 with hydrogen (3%H2O) and 0.85 Wcm−2 with methane (Steam-to-Carbon ratio, S/C = 1.0) are obtained at 600 °C, 0.7 V. This is the highest performance achieved in previous studies on MS-SOFCs. Internal reforming with various hydrocarbon is also demonstrated. In particular 0.64 Wcm−2 at 600 °C, 0.7 V is obtained when the fuel is iso-octane. We develop a numerical model to separately analyze reforming and electrochemical reaction. Catalyst infiltration dramatically increases the number of active sites for steam reforming. In addition, ruthenium/gadolinium-doped ceria (Ru/GDC) should be suitable as a catalyst metal at low temperatures because of the lower activation energy of steam reforming.
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U2 - 10.1016/j.ijhydene.2023.03.195
DO - 10.1016/j.ijhydene.2023.03.195
M3 - Article
AN - SCOPUS:85151713806
SN - 0360-3199
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
ER -
