Sol–gel synthesis of Li2ZrSi6O15 powders

Abstract

Lithium silicozirconate (Li2ZrSi6O15) was synthesised by the sol–gel method. The synthesis was performed with several Li∶Zr∶Si molar ratios. The best yield of Li2ZrSi6O15 (89%) was obtained with the Li∶Zr∶Si molar ratio of 2∶2∶6. For molar ratios of Li∶Zr of 1 a mixture of oxides, such as SiO2 and ZrO2, was obtained. Moreover, when the Zr amount was higher than two, a mixture of oxides, lithium silicates and lithium zirconates was obtained.