Fast-ion conducting glasses

Fast-Ion-Gonducting Glasses. One possible appHcation of fast-ion-conducting glasses is in soHd-state batteries (qv) for automobiles. The glasses might also be used in electrochromic displays or as sensors (qv) (25). 

Many fast ion conducting glasses contain several salts of the same alkali metal to optimise the conductivity. The expression for the charge carrier concentration in terms of the thermodynamic activities of all the... 

A ° Ag NMR study of fast ion conducting glasses in the system Ag2S-B2S3-SiS2 showed 3 well-resolved lines corresponding to 3 Ag species distinguishable both by their chemical environment and their ion dynamics. The NMR data determined as a... 

Figure 6.16, Temperature dependence of conductivity of fast ion conducting glasses. Left Ag ion conducting glasses, right Li ion conducting glasses. Results of some crystalline conductors (c), are shown for comparison (After Minami, 1985)...

Table 6.3 Decoupling indices R,= Ts/t<, for various fast ion conducting glasses at their Tg (After Angell, 1986).

Table 6.4 Typical examples of fast ion conducting glasses containing Ag or Li ions (After Minami, 1985)...

Although the electrical conductivity of HMFG is lower than that of a typical fast ion conducting glass, the fact that the conductivity is anionic and relatively high in the former case raises the possibility of interesting applications. 

Banhatti RD, Funke K (2004) Dielectric function and localized diffusion in fast-ion conducting glasses. Solid State Ion 175 661... 

Minami T. Fast ion-conducting glasses. In New Glasses and Their Properties. Izumitani T., ed. 

Minami T (1984) Fast ion conducting glasses. J Non-Cryst Solids 73 273-284... 

Adams S, Swenson J (2002) Bond valence analysis of transport pathways in RMC models of fast Ion conducting glasses. Phys Chem Chem Phys 4 3179-3184... 

For the fast ion conducting glasses (where migration barriers within the path are not too large compared to the thermal energy of the mobile ions), the cation migration can be reasonably approximated even by a simple random walk that is restricted to regions of low bond valence mismatch [25, 26]. 

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