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Influence of doping bismuth selenide with Cu atoms on its properties as a cathode material for lithium elements has been examined. The measurements of electrical characteristics and their anisotropy, structural properties of Bi₂Se₃ and discharge parameters of lithium elements are presented. We have established that adding 1 wt. % Cu to stoichiometric composition of bismuth selenide leads to decrease of free electron concentration and conductivity anisotropy whereas electron Hall mobility along the layers becomes increased.

The problem of lithium and lithium-ion power sources recycling is considered. The data on toxicology of components of electrodes and electrolyte of these devices, economic feasibility of their recycling and some technological receptions used during recyling are given.

Testing of lithium elements with fluorocarbon packed electrodes showed that it is technical P-267E carbon as an electroconductive additive with 5-6% content of the latter that provides the highest capacity and power of the source.

Possibility of ultradispersed TiO₂2 (anatase modification) using as the base of the lithium power sources cathode material obtained by chloride-acid hydrolysis of titanium tetrachloride has been studied. The researches of Li+ ions electrochemical intercalation kinetics and phasic model of the process was suggested. The cathode material phase composition changes during discharge were fixed and interpreted.