Alternative SOFC Anode Materials with Ion- and Electron-Conducting Backbones for Higher Fuel Utilization

Redox-stable anodes are developed for zirconia-based electrolyte-supported solid oxide fuel cells (SOFCs) operating at high fuel utilization, as an alternative to the Ni yttrium-stabilized-zirconia (YSZ) cermet. Gadolinium-doped ceria (GDC, Ce0.9Gd0.1O2) is utilized as a mixed ionic electronic condu...

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Main Authors: Futamura, Shotaro, Tachikawa, Yuya, Matsuda, Junko, Lyth, Stephen Matthew, Shiratori, Yusuke, Taniguchi, Shunsuke, Sasaki, Kazunari
Format: Conference Proceeding
Language:English
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Summary:Redox-stable anodes are developed for zirconia-based electrolyte-supported solid oxide fuel cells (SOFCs) operating at high fuel utilization, as an alternative to the Ni yttrium-stabilized-zirconia (YSZ) cermet. Gadolinium-doped ceria (GDC, Ce0.9Gd0.1O2) is utilized as a mixed ionic electronic conductor (MIEC), and combined with lanthanum-doped strontium titanate (LST, Sr0.9La0.1TiO3) as an electronic conductor. Catalyst nanoparticles (either Ni or Rh) are incorporated via impregnation. The electrochemical characteristics of SOFC single cells using these anodes are characterized in humidified H2 at 800°C. The stability against redox cycling and under high fuel utilization is analyzed and discussed.
ISSN:1938-5862
1938-6737
1938-6737
1938-5862
DOI:10.1149/07801.1179ecst