New silicon substituted BiMeVO x : synthesis and study of structural properties in relation to ionic conductivity.

Partial substitution of vanadium with silicon in the compound Bi4V2O11, which belongs to the Aurivillius family, leads to the creation of a solid solution Bi4V2-x Si x O11-δ (0 ≤ x ≤ 0.4). The compound with x = 0.1 turns out to be a monoclinic α-form of Bi4V2O11, while the compounds with x = 0.2 and x = 0.3 are orthorhombic ß-polymorphs, and the compound with x = 0.35 is of tetrahedral γ-polymorph. Electrochemical Impedance Spectroscopy has been used to measure the ionic conductivity of doped samples. The ceramic sample with x = 0.1 has the highest ionic conductivity values.

Correction: New silicon substituted BiMeVO x : synthesis and study of structural properties in relation to ionic conductivity.

[This corrects the article DOI: 10.1039/D3RA00485F.].