Lithium Electrochemical Investigations of Crystalline Layered Compounds

Abstract

AbstractElectrochemical investigations on lithium insertion in crystalline layered chalcogenide compounds are presented. Systematic and precise studies of the voltage-composition relation were made in single crystals of InSe, In2Se3, MoS2, TiS2 and NiPS3. The stability of the intercalated phases is discussed on bases of electrochemical potential spectroscopy measurements and inverse derivative composition voltage is analysed using the lattice gas model. The chemical diffusion coefficient D and the Darken factor Kt are deduced from the galvanostatic discharge curves of the lithium-solid solution electrode cells. All parameters have been measured as a function of lithium composition.