Positron Annihilation Spectroscopy as a Diagnostic Tool for the Study of LiCoO2 Cathode of Lithium-Ion Batteries

Positron annihilation spectroscopy using lifetime and Doppler broadening allows the characterization of lithiation state in LiCoO2 thin film used cathode lithium-ion batteries. The results reflect positron spillover because presence graphite between oxide grains real Li-ion This produces an effect measured parameters which are sensitive to delocalized electrons from lithium atoms as Compton scattering results. first component corresponds a bulk-like can be characterize charge while second represents surface at grain-graphite interface.