Structural properties and proton conductivity of the 12-tungstophosphoric acid doped aluminosilicate gels
Milonjić, Slobodan K.
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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 (sigma similar to 10(-3) S/cm), WPA-doped aluminosilicate gel is a promising material for solid electrolytes. (C) 1999 Published by Elsevier Science B.V, All rights reserved.
Keywords:protonic conductivity / sol / gel
Source:Solid State Ionics, 1999, 125, 1-4, 417-424
- 9th International Conference on Solid State Protonic Conductors (SSPC-9), Aug 17-21, 1998, Bled, Slovenia