Understanding the effect of oxide components on proton mobility in phosphate glasses using a statical analysis approach

Abstract

Relationship between composition and proton mobility in proton conducting phosphate glass has been obtained using a statical analysis approach.

Enhancing proton mobility and thermal stability in phosphate glasses with WO3: the mixed glass former effect in proton conducting glasses

“…The slope of the experimentally obtained data, +9.1 1C per mol% of WO 3 replacing PO 5/2 , agreed well with that predicted slope of +6.5 1C per mol% of WO 3 from the linear regression model. 18 This validates the high reliability of the proposed T g -composition model.…”

“…The log(m H at T g [cm 2 V À1 s À1 ]) increased by 0.09 per mol% of WO 3 . This result is highly consistent with the predicted value of 0.08 from the linear regression model, 18 validating the high reliability of the previously proposed log(m H at T g )-composition model.…”

“…The proton transport numbers (t H ) obtained are summarized in Table 1. The results demonstrate that the t H of the 2W-and 4W-glasses were equal 18 to unity, indicating that those glasses are pure proton-conducting electrolytes. In contrast, the t H of the 6W-and 8W-glasses were less than 1.…”

“…Fig.2Variation of the glass transition temperature (T g ) of the glasses after alkali-proton substitution (APS) as a function of the WO 3 content (x). The triangle in the figure indicates the slope predicted by the linear regression model 18. …”

Proton-conducting phosphate glass: Recent development as an electrolyte in intermediate temperature fuel cells

“…It is expected that proton conductivity can be improved to at least 7 © 10 ¹3 S cm ¹1 if the maximum proton mobility can be achieved at the highest proton concentration. 57) The quantitative relationships between various components and proton mobility were revealed by using statistical methods based on material informatics 50) and experiments, 61) and further fine-tuning of composition will be promoted in the future. Regarding proton-conducting properties, proton-conducting glass prepared using the APS method is a material that can only use protons as carriers in any atmosphere and has the unique property of maintaining proton conductivity in a non-humidified atmosphere, which is not possible using conventional proton conductors.…”