Electrical conductivity of a new solid electrolyte glass material Li2OLiNbO3B2O3

With a view to the development of a lithium—borate based glass material with high ionic conductivity at the lowest possible temperature, the conductivities of different compositions of the Li₂OB₂O₃ glass system have been studied. The effect of LiNbO₃ addition on the temperature dependent conductivity of the Li₂OB₂O₃ (40:60 mol%) system, which shows maximum conductivity within the homogeneous glass formation region, was observed. The enhancement in the conductivity, 1.43 × 10^?2 (ohm cm)^?1 at 623 K, has been attributed to the increase in Li ion concentration and to its mobility which is due to vacant sites provided by the pentavalent Nb ion of Nb₂O₅. The conductivities achieved in the present investigation have been compared with earlier reports on similar systems. This material may be suitable as an electrolyte for application to power sources.