TECHNOLOGY FOCUS - ELECTRONICS - Preferred Components: The positive electrode and the negative electrode are separated by a porous separator. The electrochemical device comprises positive active material with nano-sized many particles with less than 50 micro in average diameter. The electrochemical device further includes a positive active material with tap density in excess of 2.2 g/ml. The non-aqueous electrolyte comprises an alkali metal salt and a polar aprotic solvent, where the alkali metal salt is a lithium salt. The positive electrode comprises secondary particles of a spherical morphology. The positive electrode comprises many layers. The molybdenum is less than 15 wt.% the positive electrode. The positive electrode comprises nano-size many particles having a diameter of 1-50 micro .    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The positive electrode has a composition comprising lithium-nickel-cobalt-manganese-molybdenum oxide compound of formula (Li1+xNi~aCo~bMn~cMo delta MkO2-zXz).M = Mg, Zn, Al, Ga, B, Zr, Si, Ti, Nb, or W;X = at least one of F, S, Cl or I;x = 0-0.33;alpha , beta , gamma = 0-2;delta = 0-0.2;k = 0.01-0.15; andz = 0-0.3.The lithium salt is lithium bisoxalatoborate, lithium-oxalate boron difluoride, lithium-bis oxalato phosphorus difluoride, lithium perchlorate, lithium tetrafluoroborate, lithium arsenic hexafluoride, lithium hexafluorophosphate, monolithium monocarbon trifluorosulfite, lithium 1,1,1-trifluoro-N-((trifluoromethyl)sulfonyl)methanesulfonamide(1-), lithium tris(trifluoromethylsulfonyl)methide, lithium bisperfluoroethanesulfonimide and/or lithium alkyl fluorophosphates. The molybdenum comprises a phase related from molybdenum trioxide, molybdenum(II) chloride and/or molybdenum dioxide.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The polar aprotic solvent is ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, dimethyl ether and/or gamma-butyrolactone.