TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Composition: The electrochemical cell further has separator containing ceramic and/or glass particles, preferably ceramic lithium aluminum titanium phosphate.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The electrochemical cell has an anode consisting of material containing lithium titanate (Li4Ti5O12, Li2Ti3O7 or LixTiO2), titania, titanium oxyhydroxide (TiO2(OH)x) and/or carbonaceous material, and cathode containing material containing lithium cobalt oxide (LiCoO2), lithium nickel oxide (LiNiO2), lithium nickel cobalt manganese oxide (LiNi1-x-yCoxMnyO2), lithium nickel cobalt aluminum oxide (LiNi1-x-yCoxAlyO2), lithium manganese oxide (LiMn2O4), lithium metal manganese oxide (LiM2-xMn4-yO4), lithium metal phosphate (LiMPO4, where M is iron, manganese, cobalt or nickel) and/or lithium metal phosphorus oxide (LiAyMxPO4, where A is boron, phosphorus, silicon, titanium, zirconium, hafnium, chromium, molybdenum or tungsten), carbon, oxide or phosphate. The carbonaceous material is chosen from graphite, hard carbon, amorphous carbon, carbon-containing core-shell material and silicon-containing material.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The concentration of nitrogen-containing heterocyclic and/or aminated aromatic compounds is 0.01-1%. The electrolyte salt is chosen from lithium perchlorate, lithium hexafluorophosphate, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium hexafluoroantimonate, lithium trifluoromethanesulfonate, lithium bis((trifluoromethyl)sulfonyl)imide, lithium bis((pentafluoroethyl)sulfonyl)imide, lithium bisoxalatoborate, lithium difluorooxalatoborate, lithium trifluoro tris(pentafluoroethyl)phosphate and lithium tetraphenylborate. The electrolyte solvent is chosen from ethylene carbonate, propylene carbonate, vinylene carbonate, linear carbonate chosen from dimethyl carbonate, diethyl carbonate and ethyl methyl carbonate, cyclic ether chosen from tetrahydrofuran and 2-methyltetrahydrofuran, linear ether which is dimethoxyethane, lactone chosen from ( gamma )-butyrolactone, valerolactone, acetonitrile and sulfolane. The nitrogen-containing heterocyclic compound is chosen from pyrrole, 2-methyl-1-pyrroline, 1-methylpyrroline, 1-vinyl-2-pyrrolidinone, pyridine, 2-picoline, 3-picoline, 4-picoline, 2-vinylpyridine, 4-vinylpyridine, dimethyl pyridine amine, and/or borane pyridine-complex. The aminated aromatic compound is chosen from aniline, toluidine, diphenylamine, naphthylamine, alkylaniline and dialkylaniline.