In situ high temperature X-ray diffraction and dilatometric analysis of CGO-Cu composites for solid oxide devices.

ABSTRACT: Understanding the thermo-mechanical compatibility of composite electrodes is essential for the long-term reliability of solid-oxide electrochemical devices. In this study, we demonstrate a combined in situ synchrotron X-ray diffraction (XRD) and simultaneous dilatometry approach as a rapid and predictive method to quantify both phase-resolved and bulk thermal expansion while tracking microstructural evolution at operational temperatures. Ce_0.8Gd_0.2O_2-δ-Cu (CGO-Cu) composites with varying CGO: Cu ratios (39:61-70:30 vol%) were synthesized as potential anode materials compatible with CGO electrolytes up to 800 °C. In situ XRD confirmed only the CGO and Cu phases, with Rietveld refinement revealing a slight lattice expansion and reduced CGO crystallite size wi

SUBMITTER: Balaguer M 

PROVIDER: S-EPMC12796496 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature