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Using Raman and 31P magic-angle spinning nuclear magnetic resonance (MAS-NMR) spectroscopies, we studied the structural changes in 35NaO1/2-1WO3-8NbO5/2-5LaO3/2-51PO5/2 glass upon introducing Al2O3 and/or Y2O3 in order to understand the reduced mobility of proton carriers in glasses with Al2O3 and/or Y2O3 in which proton carriers were injected by alkali-proton substitution (APS). The Raman and 31P...
We investigated electrochemical substitution involving the electrochemical oxidation of hydrogen with proton injection into an oxide glass. This was accompanied by the electrochemical reduction of sodium ions and the discharge of metallic sodium out of the glass. This is referred to as the alkali–proton substitution technique and we applied it to a sodium-containing phosphate glass. The thermal stability...
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