Glass formation occurred, in the Na2O-Ta2O5-P2O5 system, in the region of the above composition. The glasses which were investigated here were characterized by a marked Na+ mobility (tables 177 and 178), when compared with that of other glassy oxide electrolytes with a Na+ content of about 1.5 x 1022/cm3. This was verified by means of impedance spectroscopy and was explained in terms of the existence of a NASICON-like arrangement of oxo-coordination polyhedra in the glass network.

C.Kaps, D.Beyer, R.Schubert: Solid State Ionics, 1994, 70-71, 385-9

 

 

 

Table 177

Ionic Conduction Parameters of Na2O-Ta2O5-P2O5 Glasses

 

Ta2O5 (mol%)

P2O5 (mol%)

log[o (S/cm)]

E (eV)

12.5

37.5

2.27

0.57

7.5

37.5

2.28

0.59

12.5

32.5

2.21

0.53

 

 

 

Table 178

Ionic Conductivity of Na2O-Ta2O5-P2O5 Glasses at 300K

 

Ta2O5 (mol%)

P2O5 (mol%)

log[D (S/cm)]

12.5

37.5

-2.66

7.5

37.5

-2.93

12.5

32.5

-2.47