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- W4368362912 abstract "For solid oxide fuel cells, it is an effective strategy to enhance the oxygen reduction reaction activity of cathode through introducing active nanoparticles on electrode surface. In this study, we developed a novel cathode SrY0.05W0.05Co0.9O3-δ and optimizing strategy of CO2-induced surface in-situ reconfiguration. The nanoscale SrCO3 particles and the oxide nanoparticles could be produced after the treating atmosphere was switched from CO2 to air. Both SrCO3 nanoparticles and nano-oxides are beneficial to the oxygen reduction reaction kinetics of surface process and the area specific resistance of symmetric cell with SrY0.05W0.05Co0.9O3-δ electrode decreased from 0.085 to 0.054 Ω cm2 at 600 ℃. Although the nano-sized SrCO3 was degraded in air over time, the oxide nanoparticles held a stable state for a long time and the resistance finally stabilized at ∼0.068 Ω cm2. However, for classic cathode Ba0.5Sr0.5Co0.8Fe0.2O3−δ, it possesses a strong interaction with CO2 so that the produced large-sized BaCO3 failed to transform into nanoparticles and totally decompose. Therefore, designing the suitable cathode and tailoring the interaction between CO2 and electrode materials are significant to realize the CO2-induced surface in-situ reconfiguration." @default.
- W4368362912 created "2023-05-05" @default.
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- W4368362912 date "2023-08-01" @default.
- W4368362912 modified "2023-10-16" @default.
- W4368362912 title "CO2-induced in-situ surface reconfiguration of strontium cobaltite-based perovskite for accelerated oxygen reduction reaction" @default.
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- W4368362912 doi "https://doi.org/10.1016/j.apsusc.2023.157452" @default.
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