Improving the electrochemical energy conversion of solid oxide fuel cells through the interface effect in La0.6Sr0.4Co0.2Fe0.8O3-δ-BaTiO3-δ electrolyte

Space Charge Polarization Effect in Surface-Coated BaTiO3 Electrolyte for Low-Temperature Ceramic Fuel Cell

“…Perovskite semiconductors have also shown promise as electrolytes for low-temperature CFCs, such as the SrFe 0.2 Ti 0.8 O 3 –ZnO heterostructure demonstrated by Shah et al . Using semiconductor-based materials in ceramic fuel cells offers significant advantages, including enhanced ionic conducting properties and a built-in electric field (BIEF) that prevents electronic short-circuiting and promotes ion transportation. − Among these materials, BaTiO 3 , a widely studied perovskite, possesses high dielectric constant and ferroelectric properties, making it suitable for various electronic and electro-optical applications. − Using high dielectric materials with large polarizability to develop oxide-ion electrolytes has also emerged. , An exciting strategy was needed to advance CFCs, and this study presents an approach using a BaTiO 3 (BTO) coating, incorporating the wide band gap ion-conducting semiconductor material CeO 2 as a promising electrolyte layer for CFCs. The authors also investigated the surface and interfacial properties of the BTO–CeO 2 interfaces to enhance ionic conductivity and realize a successful fuel cell operation.…”