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- W1521253048 abstract "LSCF Cathodes were explored when effected with A-site non-stoichiometry. At 700-800 C, the operating temperatures of intermediate temperature (IT-) SOFCs have enabled the use of stainless steels in the SOFC framework and current collectors, allowing significant reductions in cost. However, the lower operating temperatures of IT-SOFC's also result in significant decreases in power densities of cells with LSM cathodes due to their high activation energies. LSCF is a mixed ionic electronic conducting perovskite that exhibits higher performance than LSM/YSZ composites and shows potential as a replacement cathode. This study investigates the effect of A-site stoichiometry on the performance of LSCF cathodes. Cell tests showed that A-site and Sr-deficient LSCF cathodes consistently outperformed stoichiometric LSCF cathodes, exhibiting up to 10% higher cell power densities. It was also observed that all stoichiometric, A-site, and Sr-deficient LSCF cathodes degraded over time at similar rates. Contributions of ohmic and electrode polarization losses to cell degradation rates were similar regardless of cathode composition." @default.
- W1521253048 created "2016-06-24" @default.
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- W1521253048 date "2011-09-01" @default.
- W1521253048 modified "2023-10-18" @default.
- W1521253048 title "Effect of A-site Non-stoichiometry on LSCF Cathodes" @default.
- W1521253048 cites W1998439281 @default.
- W1521253048 cites W2016192455 @default.
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- W1521253048 doi "https://doi.org/10.2172/1036437" @default.
- W1521253048 hasPublicationYear "2011" @default.
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