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- W4319662511 abstract "In this study, the composition of the layered perovskite SmBa0.5Sr0.5Co2O5+d was changed to different non-stoichiometric compositions by changing the substitution amount of Ba and Sr. SmBa0.45Sr0.5Co2O5+d (SBSCO-0.45/0.5) showed the lowest area specific resistance (ASR) because the area % caused by high binding energy (HBE) of O1s in the X-ray photoelectron spectroscopy (XPS) analysis was the largest compared to all other tested compositions and also the unit cell volume was smaller than that of other samples. The dense SmBa0.5Sr0.48Co2O5+d (SBSCO-0.5/0.48) showed the highest electrical conductivity. This is because SBSCO-0.5/0.48 has the smallest decrease in oxygen contents compared to other samples when subject to temperature increase. Also, through XPS analysis, it was found that the area % of the Co3+ and Co4+ coexistence regions of Co2p of SBSCO-0.5/0.48 was the largest. The electrical conductivity values and behaviors of the porous SBSCO-0.45/0.5 and SBSCO-0.5/0.48 were not significantly different. Comparing the single-cell performance with composite cathodes comprised of SBSCO-0.45/0.5 and SBSCO-0.5/0.48 with CGO91, the results show that the single-cell with the SBSCO-0.45/0.5 and CGO91 cathode showed higher maximum power density." @default.
- W4319662511 created "2023-02-10" @default.
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- W4319662511 date "2023-05-01" @default.
- W4319662511 modified "2023-10-17" @default.
- W4319662511 title "Electrochemical characteristic of non-stoichiometric SmBa0.45Sr0.5Co2O5+d layered perovskite oxide system for IT-SOFC cathode" @default.
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- W4319662511 doi "https://doi.org/10.1016/j.ijhydene.2023.01.255" @default.
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