Conductivity spectra of lithium ion conducting glassy ceramics

Study of ac conductivity spectra of Li2O doped different glassy ceramics in wide frequency and temperature regime using Jonscher's power law model and Almond-West formalism reveals that Li+ migration depends upon nature of doping reagent. It also points that the ratio of power law pre-factor to the exponent (-log10 A/S) indicates temperature and composition dependency of present conductors. Motion of Li+ may predict that the process of conduction is percolation or pseudo three dimensional types. These glassy ceramics should be suitable candidates for lithium ion battery application. Improvements in the capacity of modern lithium (Li) batteries can be made by enhancing conductivities and ionic diffusivities in various anode and cathode materials. Fundamentally, such improvements can be achieved in the present electrolyte compositions. It is also interestingly noted that constantly changing nature of electrical conduction in present systems are strongly microstructure dependent.