Effect of anode thickness and Cu content on consolidation and performance of planar copper-based anode-supported SOFC
| Autor: | Saqib Rashid, Vincenzo M. Sglavo, Vincenzo De Marco, Alessandro Iannaci |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Open-circuit voltage Metallurgy Oxide Energy Engineering and Power Technology chemistry.chemical_element Sintering 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Copper 0104 chemical sciences Anode Dielectric spectroscopy chemistry.chemical_compound Fuel Technology chemistry Ultimate tensile strength Composite material 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 42:12543-12550 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2017.03.221 |
| Popis: | Planar, Cu-containing Gadolinia-doped ceria anode-supported solid oxide fuel cells to be used at intermediate temperature (500–750 °C) were produced in the present work. The Intermediate temperature solid oxide fuel cells were fabricated using Li 2 O as sintering aid for Gadolinia-doped ceria, varying the anode-to-electrolyte thickness ratio (r) from 2 to 10 and the CuO content in the anode from 45 vol% to 55 vol%. Co-sintering of the thermo-pressed green cells was carried out at 900 °C for 3 h. The electrolyte densification was favoured by increasing the r value, this being accounted for the enhanced compressive stresses induced by the supporting anode on the electrolyte upon sintering. Larger CuO content positively influences the overall cell performance, due to the improved electronic conductivity of the anode. Nevertheless, CuO concentration cannot exceed 50 vol% because of the tensile stresses (and corresponding flaws) generated in the electrolyte for larger amount. IT-SOFC containing 50 vol% CuO was characterized by an Open Circuit Voltage ≈0.82 V and a maximum power density of 200 mW cm −2 at 700 °C. |
| Databáze: | OpenAIRE |
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