Effect of fluorine doping on the ionic (O2-, H+) conductivity of oxygen-deficient complex oxides

摘要

The effect of fluorine doping on the transport properties (oxygen-ion and proton conductivity) of perovskite-related complex oxides Ba2In2O5, Ba4In2Zr2O11, and Ba(4)Ca(2)Nb(2)O(11)with various concentrations and degrees of disordering of oxygen vacancies was analyzed. Regardless of the doping mechanism and concentrations and degrees of disordering of oxygen vacancies, the introduction of low concentrations of fluoride ions increases the ionic component of the conductivity due to the appearance of effects of electrostatic repulsion of ions of various nature in the anionic sublattice.