TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The lithium salt is lithium chloride, lithium bromide, lithium iodide, lithium tetrafluoro borate, lithium hexa fluoro phosphate, lithium hexafluoroarsenate, lithium tetrachloro aluminate, chloro borate, lithium tetraphenyl borate, imide, lithium methane sulfonate, lithium perchlorate, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium trifluoro methane carbonate, monolithium monocarbon trifluorosulfite, and lithium-boron-containing compound of formula: LiB10Cl10 (I). The lithium-ion battery comprises cathode active material comprises a lithium metal phosphate of formula: Li1+aM(PO4-b)Xb (1) (II) or Li1+aFe1-xM'x(PO4-b)Xb (III), where M is element of group 12, X is fluorine, sulfur, and nitrogen, M' is aluminum, magnesium, nickel, cobalt, manganese, titanium, gallium, copper, vanadium, niobium, zirconium, cerium, indium, zinc, and yttrium, a is -0.5 to +0.5, x is 0-0.5 and b is 0-0.1, and anode electrode active material comprises amorphous carbon. The amorphous carbon is hard carbon and/or soft carbon. The lithium metal phosphate (II) or (III) has olivine crystal structure of lithium iron phosphate coated with a conductive carbon.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The the silane-based material is trimethoxysilylpropyl aniline, tetramethyl orthosilicate, tetraethyl orthosilicate, tetrapropyl orthosilicate, and tetrabutyl orthosilicate, preferably trimethoxysilylpropyl aniline. The content of trimethoxysilylpropyl aniline is 0.1-10 wt.%, preferably 0.5-8 wt.% with respect to content of electrolyte. The electrolyte further comprises ether-based solvent, which is tetrahydrofuran, 2-methyl tetrahydrofuran, dimethyl ether and dibutyl ether, and carbonate-based solvent, which is ethylene carbonate, propylene carbonate, 1,2-butylene carbonate, 2,3-butylene carbonate, 1,2-polybutylene carbonate, and 2,3-polyethylene carbonate, at volume ratio of 2:8-8:2. The carbonate-based solvent comprises cyclic carbonate including ethylene carbonate, propylene carbonate, 1,2-butylene carbonate, 2,3-butylene carbonate, 1,2-polybutylene carbonate, and 2,3-polyethylene carbonate, and linear carbonate including dimethyl carbonate, diethyl carbonate, dipropyl carbonate, ethyl methyl carbonate, methylpropyl carbonate and ethyl propyl carbonate at volume ratio of 1:4-4:1.