Abstract
To reduce the cathode–electrolyte interfacial polarization resistance of low-temperature solid oxide fuel cells (SOFCs), a nanostructured porous thin cathode consisting of Sm 0.5Sr 0.5CoO 3 (SSC) and Ce 0.8Sm 0.2O 1.9 (SDC) was fabricated on an anode-supported electrolyte film using spin-coating technique. A suspension with nanosized cathode materials, volatilizable solvents and a soluble pore former was developed. The results indicated that the cell with the nanostructured porous thin cathode sintered at 950 °C showed relatively high maximum power density of 212 mW cm −2 at 500 °C and 114 mW cm −2 at 450 °C, and low interfacial polarization resistance of 0.79 Ω cm 2 at 500 °C and 2.81 Ω cm 2 at 450 °C. Hence, the nanostructured porous thin cathode is expected to be a promising cathode for low-temperature SOFCs.
Published Version
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