Boosting Electrochemical Performance via Extra-Role of La-Doped CeO_2-δ Interlayer for "Oxygen Provider" at High-Current SOFC Operation.

ABSTRACT: Utilizing rare earth doped ceria in solid oxide cells (SOCs) engineering is indeed a strategy aimed at enhancing the electrochemical devices' durability and activity. Particularly, Gd-doped ceria (GDC) is actively used for barrier layer and catalytic additives in solid oxide fuel cells (SOFCs). In this study, experiments are conducted with La-doped CeO₂ (LDC), in which the Ce sites are predominantly occupied by La, to prevent the formation of the Ce-Zr solid solution. This LDC is comparably used as a functional interlayer between the electrolyte and cathode if sintered at lower temperatures to avoid La₂Zr₂O₇ impurity. In addition, the high substitution of La³⁺ into the ceria lattice improves the oxygen non-stoichiometry of LDC, leading

SUBMITTER: Nguyen XD 

PROVIDER: S-EPMC11633512 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature