Fabrication and Characterization of Anode-supported Solid Oxide Fuel Cell Based on Proton Conductor Electrolyte

摘要

Proton conducting oxide BaCe0.7Zr0.1Y0.2O3-delta. (BCZY7) was synthesized by high temperature solid-state reaction method, which crystal structure and microstructure morphology were characterized. The anode-supported button solid oxide fuel cell (SOFC), NiO-BCZY7/BCZY7/La0.6Sr0.4Co0.2Fe0.8O3-delta(LSCF)-BCZY7, was fabricated by combining the dip-coating and co-sintering processes. It operated by using H-2 (containing 3vol% H2O) as fuel and ambient air as oxidant. The maximum power density of the cell reaches 203, 123 and 92 mW.cm(-2) at 600, 550 and 500 degrees C, respectively. However, traditional SOFCs based on (ZrO2)(0.92)(Y2O3)(0.08) electrolyte usually display only tens of milliwatts output per unit area at 600 degrees C. Proton conducting electrolyte greatly improves the low and medium temperature performance of SOFCs and provides a promising solution to reduce SOFCs' operating temperature.

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