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Effects of ionic conductivity of zirconia solid electrolytes on anodic polarization properties in SOFC

Book ·
OSTI ID:242526

In order to design high Performance electrodes for SOFC, polarization properties of Pt and samaria-doped ceria (SDC) electrodes attached to zirconia electrolytes with various ionic conductivities investigated. The higher the {sigma}{sub ion}, the higher the exchange current density for the Pt anode in H{sub 2} at 800--1,000 C. In contrast, the polarization of the SDC anode was not influenced by the {sigma}{sub ion} at 900 and 1,000 C probably due to the enhanced reaction zone brought by the mixed conduction of SDC.

OSTI ID:
242526
Report Number(s):
CONF-950683--; ISBN 1-56677-095-5
Country of Publication:
United States
Language:
English