α-zirconium hydrogenphosphate, monohydrate. preparation, chemical properties and ac conductivity

Abstract

The preparation of zirconium hydrogenphosphate, monohydrate (αZrP) was performed by two methods giving materials with slightly different properties. It is shown that the particle size of αZrP depend upon the method of preparation and the washing procedures, and that the ac conductivity decreases with increasing particle size (5 x 10 -6 to 5 x 10 -5 Ω -1 cm -1 at 20°C). The activation energy has been determined to 0.25 eV/mol (between 20°C and about 100°C) independent of the particle size, showing αZrP to be a surface ion conductor.