Abstract
Antimonic acid, HSbO3 nH2O, is of interest as a proton conductor having a relatively high proton conductivity of 10 -4 Scm -1 at ambient temperature. In this study, we have synthesized various kinds of polycrystalline antimonic acid compounds due to chemical substitution or insertion at low temperature by a solution process using the reaction of an aqueous hydrogen peroxide solution with metal alkoxides. After the characterization using powder X-ray diffraction and thermogravimetric (TG) analyses, the proton conductivity has also been investigated. Consequently, it is realized that the conductivity is enhanced over 10 -3 Scm -1 for certain materials. The enhancement in the conductivity is discussed in connection with the structual properties of the materials.
