TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The lithium salt is LiPF6, LiBF4, LiFOB, LiBOB, LiN(SO2CF3)2, LiN(SO2C2F5)2, LiFSI, LiN(SO2C2F4SO2), LiN(SO2CF2)2, LiTFSI, LiCTFSI, LiSbF6, LiAsF6, LiClO4, LiCF3SO3, LiC4F9SO3, LiAlO4, LiAlCl4, LiN(CpF2pFSO2)(CqF2qFSO2) (preferably LiCl and/or LiI).p,q=natural number).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The agent (I) is present in an amount of 0.1-5 (preferably 0.1-2) pbw. The fluorinated ether (5-40 vol.%) is a compound of formula Rf1-O-Rf2 (II) or Rf1-O-R (III). The phosphazene (5-20 vol.%) is a compound of formula (IV). The non-aqueous organic solvent is selected from carbonate, ester, ether and/or ketone. The carbonate is selected from dimethyl carbonate, diethyl carbonate, dipropyl carbonate, methylpropyl carbonate, ethylpropyl carbonate, ethyl methyl carbonate, ethylene carbonate, polypropylene carbonate, butylene carbonate and/or pentylene carbonate. The ethylene carbonate is selected from difluoroethylene carbonate, chloroethylene carbonate, dichloroethylene carbonate, bromoethylene carbonate, dibromoethylene carbonate, cyanoethylenecarbonate (NEC) and/or fluoroethylene carbonate (FEC). The ester is selected from n-methyl acetate, n-ethyl acetate, n-propyl acetate, dimethyl acetate, methyl propionate, ethyl propionate, butyrolactone, decanolide, valerolactone, mevalonolactone and/or carprolactone (caprolactone). The ether is selected from dibutyl ether, tetraglyme, diglyme, dimethoxyethane, 2-methyltetrahydrofuran and/or tetrahydrofuran. The ketone is selected from cyclohexanone and/or polymethyl vinyl ketone.Rf1,Rf2=1-12C fluoroalkyl radical with fluoridation rate of 50-100%);R=1-12C hydrocarbon with fluoridation rate of 50-100%);R1a-R6a=F or O-R7a;R7a=alkyl, fluorinated alkyl or aromatic group. EXAMPLE - Electrolyte was prepared as follows: LiBF was mixed with mixed LiPF6 (0.5 M)/LiTFSI (0.5M) and ethylene carbonate (EC) and FEC and ethyl methyl carbonate (EMC) (20:5:55:20 volume ratio) as mixed solvent and fluorinated ether of formula CF2H-CF2-CH2-O-CF2-CF2H. After this FSO2-CF2-SO2F (0.2 pbw) as resistance improvement agent was added.