Observation of Fast Low-Temperature Oxygen Ion Conduction in CeO₂/β"-Al₂O₃ Heterostructure.

ABSTRACT: Semiconductor ion fuel cells (SIFCs) have demonstrated impressive ionic conductivity and efficient power generation at temperatures below 600 °C. However, the lack of understanding of the ionic conduction mechanisms associated with composite electrolytes has impeded the advancement of SIFCs toward lower operating temperatures. In this study, a CeO₂/β″-Al₂O₃ heterostructure electrolyte is introduced, incorporating β″-Al₂O₃ and leveraging the local electric field (LEF) as well as the manipulation of the melting point temperature of carbonate/hydroxide (C/H) by Na⁺ and Mg²⁺ from β″-Al₂O₃. This design successfully maintains swift interfacial conduction of oxygen ions at 350 °C. Consequently, the

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC11425223 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature