Correlation between structural and electrical properties of heavily lithiated boron oxide solid electrolytes

Abstract Infrared and impedance measurements have been carried out on high lithium content boron oxide solid electrolytes x Li 2 O–B 2 O 3 , with x = 3.0–4.5, in order to establish the correlation between their structural and electrical properties. The samples are two-phase materials, in which crystalline islands are scattered throughout the vitreous background phase. The evolution of structural and electrical properties with increasing x exhibits a marked differentiation around x = 4.0, which is associated with increasing crystallization in the material.