Tretyakov D. Physico-chemical properties of lithium salt (LiBF4, LiClO4, LiNO3, LiSO3CF3, LiN(SO2CF3)2) - aprotic dipolar solvent systems

The thesis is devoted to the study of physic-chemical properties of binary and quasi-binary systems containing lithium salts with anions BF4-, СlO4-, CF3SO3-, NO3-, N(SO2CF3)2- and aprotic dipolar solvents - dimethylsulfone, diethylsulfone, dimethylsulfoxide, ethylene carbonate, triglyme. 12 phase diagrams of binary systems lithium salt - aprotic dipolar solvent have been investigated. Solvates compositions in studied systems have determined. Specific conductivity and density data have obtained in a wide concentration and temperature range. For the first time the phase diagram of the quasi-binary system of two lithium tetrafluoroborate monosolvates and quasi-binary systems solvate - solvent have been investigated. The data of electrical conductivity and density have obtained in a complete concentration range. According to Raman spectroscopy data lithium cation solvation was characterized in a binary systems of lithium salt (LiNO3, LiClO4, LiN(CF3SO2)2) - dimethylsulfone. The possibility of using lithium salts solvates as ionic component of lithium-ion battery electrolyte is shown.