Li+ ion NASICON-glass-ceramics prepared by milling assisted synthesis route: assessment of structure and enhanced electrical transport

Abstract

Present work reveals some interesting findings on Li+ ion conducting glass-ceramics prepared by a novel external dispersion route. Our recent investigations on two interesting aspects, viz. (i) Li+ ion glass dispersion in NASICON, and (ii) Li+-NASICON dispersion in an ionic glass reveal interesting results. Li+ ion conducting analogues of NASICON, viz. Li+Ti2(PO4)3 known as LTP exhibit in grain conductivity as high as 104Ω-1cm-1, however their application is limited due to high grain boundary impedance (GBI) that limits the conductivity to 10-7-10-8Ω-1cm-1. It has been demonstrated that the GBI can be tailored appreciably by incorporating highly conducting glassy phase at the grain interface