Tarasova L. Double exchange processes in the solutions of fluoride complexes.

tetrafluoroborate and hexafluorophosphates of alkali metals in aprotic media were studied. The new advanced method of producing of the electrolyte is developed for lithium batteries, that is consisting of LiPF6 and the mixture of carbonate esters, namely, propylene carbonate and dymethyl carbonate. 19F и 31Р, nuclear magnetic resonance and X-ray diffraction spectroscopy as well as chemical, physico-chemical and component analyses and cryoscopy were used during the investigations; electron and spatial structures of complexes and thermodynamic parameters were calculated using ab initio. Phase diagrams of the solutions of initial fluoride complex salts and the products of the reactions in aprotic media were used as the scientific base for optimiza-tion of the parameters of the exchange processes. Studying of the phase equilibria allowed to find out a number of the inter-esting phenomena, that are connected with bidentate coordi-nation of the molecules of the carbonate esters with the va-cant orbitals of alkali metal cations. It was shown, that the ability to formation of chelate structures is weakening in the series Li+?Na+?K+. The electrolyte was tested in commer-cial (coin type) lithium batteries with solid МnO2 и (CFx)n cathodes. The developed method of reception of electrolytes can be utilized on production connected to discharge of elec-trolytes for lithium batteries. The data are recommended to use in rates "Electrochemistry and Electrical supplies" and "Inorganic chemistry".