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Information × Registration Number 0203U008274, 0197U018212 , R & D reports Title Investigations of the relaxation characteristics of the lithium ( lithium alloys)-nonaqueous electrolyte interfase.Substantiation of the equivalent circuit and determination of the factors providing efficient work of lithium accumulators. popup.stage_title Head Shembel O.M., Registration Date 24-07-2003 Organization Ukrainian State University of Chemical Technology popup.description2 Object of the inverstigation was lithium anode in nonaqueous electrolyte.In the work by the method of electrode impedance the relaxation characteristics of lithium electrode in nonaqueous electrolytes have been investigated. Total resistance and the total capacity of the film passivating lithium surface have been measured. Influence nature of salt, solvent and "ageing" time on the parameters of passivating film has been shown. Equivalent circuit of lithium- nonaqueous electrolyte has been substantiated, it describes the film taking into account the resistances and capacities of space charge and surface levels, Warburg impedance which characterises ionic condactivity of film and volume resistance, determining its properties at its constant current. It has been shown that in passivating film the processes with different relaxation time occur. Block diagram of calculation has been developed; computer program for determination of all the components of equivalent circuit has been optimized. Parameters ofpassivating film in electrolyte PC, LiClO4 have been calculated and their influence on film conductivity has been determined. Experimental investigation of the impedance characteristics of volume lithium alloys during their "ageing" in nonaqueous electrolytes have been carried out, and the parameters of the meters surface levels and space charge of passivating film on the alloys of different composition have been determined. The work results are used at the development of lithium chemical power sources. Product Description popup.authors popup.nrat_date 2020-04-02 Close