LiCo Dual-Doped Ceria-Based Composite as a Promising Low-Temperature Electrolyte for Metal-Supported Solid Oxide Electrolyzers.

ABSTRACT: Solid oxide electrolysis cells (SOECs) are among the most efficient energy-conversion devices for power-to-X applications in green energy technologies. Here, we report a high-level (5 mol%) Li- and Co-dual-doped gadolinium-doped ceria (GDC) electrolyte synthesized under an inert atmosphere, suitable for fabricating SOECs using conventional ferritic steel supports. The doped GDC exhibits uniform dopant incorporation and a single-phase cubic fluorite structure, achieving 98.18% relative density at 950 °C. Dilatometry and microstructural analyses reveal that Li-Co codoping significantly reduces sintering temperature and improves grain connectivity. Time-of-flight secondary ion mass spectrometry shows a Li,Co-rich surface layer whose thickness depends on sintering conditions, while Raman spect

SUBMITTER: Liu Y 

PROVIDER: S-EPMC12854247 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature