TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Process: Nickel cobalt aluminum oxide (NCA) or titanate is combined with carboxymethylcellulose (CMC) and poly(vinylidene fluoride) (PVDF) for the preparation of electrode. The cathode active material is additionally coated with carbon, oxides or phosphates. The anode is treated with a proton-absorbing or -releasing substance to modify the pH. Preferred Components: The anode active material is selected from Li4Ti5O12, Li2Ti3O7, LixTiO2, titanium dioxide (TiO2), TiO2(OH)x and its mixtures. The anode active material is additionally coated with carbon. It is a mixture of the anode active material and carbonaceous material, where the carbonaceous material is selected from graphite, hard carbon, amorphous carbon, carbon-containing core-shell material and silicon containing material. The cathode active material is selected from LiCoO2, LiNiO2, LiNi1-x-yCoxMnyO2, LiNi1-x-yCoxAlyO2, LiMn2O4, LiM2-xMn4-yO4, LiMPO4, LiAyMxPO4, and its mixtures.M=Fe, Mn, Co or Ni; andA=B, P, Si, Ti, Zr, Hf, Cr, Mo or W.The electrolyte salt is selected from lithium perchlorate (LiClO4), lithium hexafluorophosphate (LiPF6), lithium tetrafluoroborate (LiBF4), lithium hexafluoroarsenate (LiAsF6), lithium hexafluoroantimonate (LiSbF6), lithium trifluoromethanesulfonate (LiCF3SO3), lithium bis((trifluoromethyl)sulfonyl)imide (LiN(CF3SO2)2), lithium bis((pentafluoroethyl)sulfonyl)imide (LiN(C2F5SO2)2), lithium bisoxalatoborate (LiBOB), lithium difluorooxalatoborate (LidFOB), lithium trifluoro tris(pentafluoroethyl)phosphate (LiFAP) and lithium tetraphenylborate (Li(C6H5)4B). The electrochemical cell comprises a film-forming additive selected from vinylene carbonate, vinyl ethylene carbonate, and propane sultone. It comprises gas-reducing additive selected from N-containing heterocycles, such as pyrrole, 2-methyl-1-pyrroline, 1-methylpyrroline and 1-vinyl-2-pyrrolidinone, pyridine, 2-picoline, 3-picoline, 4-picoline, 2-vinylpyridine, 4-vinylpyridine, and dimethyl-pyridine-amine (DMPA) and boran-pyridine-complex or its mixtures or aminated aromatic compounds such as aniline, toluidine, diphenylamine, naphtylamine, alkylanilines, and dialkylaniline. The electrochemical cell electrolyte comprises an electrolyte salt, an electrolyte solvent and an electrolyte additive. The electrolyte solvent is selected from ethylene carbonate (EC), propylene carbonate (PC), vinylene carbonate (VC), linear carbonate such as dimethyl carbonates (DMC), diethyl carbonate (DEC), ethyl methyl carbonate (EMC), cyclic ethers such as tetrahydrofuran (THF) and 2-methyltetrahydrofuran (2-Me-THF), linear ethers such as dimethoxyethane (DME), lactones such as gamma -butyrolactone (GBL), valerolactone, acetonitrile and sulfolane and its mixtures. EXAMPLE - No suitable example given.