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BaCo0.4Fe0.4Zr0.1Y0.1O3−σ Cathode Performance for Proton Conducting Solid Oxide Fuel Cells with BaZr0.8−xCexY0.1Yb0.1O3−δ Electrolytes

https://doi.org/10.1149/2754-2734/ad040c

Li, Wenhao; Sozal, Md Shariful; Drozd, Vadym; Durygin, Andriy; Cheng, Zhe (October 2023, ECS Advances)

BaCo0.4Fe0.4Zr0.1Y0.1O3−σ (BCFZY) is a proton, oxygen-ion, and electron-hole conducting cathode material for intermediate temperature solid oxide fuel cells. Its electrode reaction mechanism in air with moisture is not well understood. In this study, three types of symmetrical cells with the same BCFZY cathode were fabricated over three related proton conducting electrolytes: BaZr0.8−xCexY0.1Yb0.1O3−δ (x = 0.1, 0.4, and 0.7). The cathode shows similar performance over three different electrolytes in dry air but different responses to moisture introduction. The differences are hypothesized to relate to the mutual diffusion at the cathode/electrolyte interface. Such a hypothesis is supported by different techniques such as XRD Rietveld refinement of BCFZY cathode in mixtures with different electrolytes after firing, energy-dispersive X-ray spectroscopy (EDS) line scanning for element concentration distribution at the cathode/electrolyte interface, as well as electrochemical test for a related BaCoFeO-type cathode with Zr replaced by Ce.
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Electrical, thermal, and H2O and CO2 poisoning behaviors of PrNi0.5Co0.5O3-δ electrode for intermediate temperature protonic ceramic electrochemical cells

https://doi.org/10.1016/j.ijhydene.2022.05.011

Sozal, Md Shariful; Tang, Wei; Das, Suprabha; Li, Wenhao; Durygin, Andriy; Drozd, Vadym; Zhang, Cheng; Jafarizadeh, Borzooye; Wang, Chunlei; Agarwal, Arvind; et al (June 2022, International Journal of Hydrogen Energy)

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Synthesis of nanopolycrystalline mesoporous diamond from periodic mesoporous carbon: Mesoporosity increases with increasing synthesis pressure

https://doi.org/10.1016/j.scriptamat.2018.10.024

Najiba, Shah; Juhl, Stephen J.; Mandal, Manik; Liu, Cong; Durygin, Andriy; Chen, Jiuhua; Fei, Yingwei; Alem, Nasim; Landskron, Kai (March 2019, Scripta Materialia)

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