Structure and Mixed Proton-Electronic Conductivity in Pr and Nb-Substituted La_5.4MoO_12-δ Ceramics.

ABSTRACT: Lanthanide molybdates are materials known for their mixed proton-ionic conductivity. This study investigates the effects of Pr content and Nb-doping on the crystal structure and electrical properties of the La_5.4-xPr_xMo_1-yNb_yO_12-δ (x = 0, 1.35, 2.7, 4.05, 5.4; y = 0, 0.1) series. The research focuses on two primary objectives: (i) enhancing the electronic conductivity through the use of Pr⁴⁺/Pr³⁺ redox pairs and (ii) increasing the ionic conductivity through Nb⁵⁺ aliovalent doping. The materials were thoroughly characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission and scanning electron microscopy (TEM and SEM), and complex impedance spectroscopy. The avera

SUBMITTER: Sanchez-Caballero A 

PROVIDER: S-EPMC11818200 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature