Ga-doped Ca₁₂Al₁₄O₃₃ mayenite oxide ion conductors: synthesis, defects, and electrical properties.

ABSTRACT: Although mayenite Ca₁₂Al₁₄O₃₃ has been known as an oxygen ion conductor for several decades, its relatively low oxide ion conductivity limits its applications in electrochemical devices. Thus, many efforts have been made by researchers, employing a doping strategy, in order to further improve its ionic conductivity, but with little success. In this work, a series of pure phase Ca₁₂Al_14-x Ga _x O_33+δ (0 ≤ x ≤ 1.2) materials were synthesized by a traditional solid state reaction method. Scanning electron microscopy (SEM) combined with energy dispersion spectrum (EDS) analyses disclosed well-sintered ceramics with uniform Ga distributions. The defect formation energies for Ga replacing the

SUBMITTER: Yi H 

PROVIDER: S-EPMC9060535 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature