NASICON materials lithium conduction

Appreciable ionic conductivity is found in open framework or layered materials containing mobile cations (see Ionic Conductors). Several phosphates have been found to be good ionic conductors and are described above NASICON (Section 5.2.1), a-zirconium phosphates (Section 5.3.1), HUP (Section 5.3.3), and phosphate glasses (Section 5.4). Current interest in lithium ion-conducting electrolytes for battery apphcations has led to many lithium-containing phosphate glasses and crystalline solids such as NASICON type titanium phosphate being studied. ... 

Quite a large variety of interesting fast lithium-ion solid conductors is now known, as compiled in Figure 19.9 and Table 19.1. In the case of sodium-and potassium-ion conductors only the /l/)3"-alumina family, and for sodium the NASICON structure, were considered for practical application, due to the high ionic conductivities of these materials which are unmatched by any other sodium- or potassium-ion conductor. However, for 73/73"-alumina, NASICON and structurally related ionic conductors, the ionic conductivities and activation enthalpies are... 

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