Structural properties and proton conductivity of the 12-tungstophosphoric acid doped aluminosilicate gels

Abstract Preparation of aluminosilicate gels bulk, containing 12-tungstophosphoric acid (WPA) in mesopores, as well as their structural and conduction characteristics are reported. Doped gels are prepared from aluminum–silicon alkoxide AlSi(OR) x , iso-propanol, water and WPA·29H 2 O mixtures. Characteristics of the obtained doped gels depend on the WPA content. Results such as WPA-filled mesopores and infra red (IR) band shifts indicate differences with respect to material obtained by mechanical alloying and interaction between the WPA and aluminosilicate host framework. According to the obtained results, especially of the higher conductivity ( σ ∼10 −3 S/cm), WPA-doped aluminosilicate gel is a promising material for solid electrolytes.