Abstract
Conductive glass-ceramics based on Li2O–TiO2–P2O5–Cr2O3–SiO2 system were fabricated by heat-treatment at the crystallization peak temperature for 2h. The crystallization behavior of glass-ceramics was identified by differential thermal analysis (DTA), X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) methods and their conductivity behavior was investigated by complex impedance techniques. The glass-ceramics were mainly composed of LiTi2(PO4)3 in which Ti4+ ions were partially replaced by Cr3+ ions. A considerable enhancement in conductivity was observed by partial substitution of Ti4+ by Cr3+ ions. 100 part [Li1.5Cr0.5Ti1.5(PO4)3] and 5 part SiO2 glass-ceramics in the 100 part [Li1+xCrxTi2−x(PO4)3] and 5 part SiO2 system, where x=0–0.8, exhibited the highest ambient conductivity value of 2.14×10−2S/cm with an activation energy as low as 15.1kJ/mol.
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