STUDY ON THE CONDUCTIVITY OF A COMPLEX INORGANIC ION EXCHANGER—α—ZIRCONIUM PHOSPHATE MIXED WITH SILICA

The composite of α-ZrP and fumed silica was prepared by dispersing predetermined molar ratios of polycrystalline α-ZrP in water.Admittance measurement of the samples was made in the frequence range from 5Hz to 1MHz and the temperature range from -20℃ to 20℃.The activation energy in conduction of the composites,with different molar fraction of α-ZrP,is about 5.9KJ/mol at 60% and 40% relative humidities.The results show that the charge transport mechanism was not changed after mixing fumed silica into α-ZrP and the charge transport medium is water in α-ZrP and the composites.