Publication date: 10th April 2024
Hydrogen emerges as a central green fuel amid the transition to a hydrogen-based economy, offering zero CO2 emissions and sustainable energy sources. Solid oxide electrochemical cells (SOCs) based on proton-conducting ceramics such as BaCeO3 and BaZrO3 doped with Y2O3 is a vital technology that can lead the hydrogen economy due to their ability to operate at lower temperatures compared to conventional oxygen ion-conducting SOCs. Research is mainly focused on fuel electrode-supported structures based on BaCeO3 electrolytes due to their outstanding performance, although challenges regarding the chemical stability of the electrolyte still remain. In particular, electrolyte supports are considered to be one of the main directions of interest in SOCs research based on oxygen conductors due to their structural advantages and have been studied at commercial level, but research on electrolyte-supported SOCs in proton conductors has not been implemented. Here, by considering the systematic composition design of both the electrolyte and setter and the sintering conditions, we successfully fabricated BaZr0.85Y0.15O3-δ (BZY)-based electrolyte supported SOCs, tailored for scalable SOCs applications. In this study, we will discuss the results of the study of BaZr0.85Y0.15O3-δ (BZY)-based proton conducting electrolytes aimed at enhancing the performance of fuel cells and water electrolysis based on electrolyte supports.
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (Ministry of Science and ICT [MSIT]) (grant number: NRF-2022R1A2B5B02001873), and Future Hydrogen Original Technology Development of the National Research Foundation of Korea (NRF) grant funded by the Korean government (Ministry of Science and ICT [MSIT]) (grant number: NRF- 2021M3I3A1084928).
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