TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Properties: The particle size of the inorganic material is 1-10 nm. The coated-particulate electrode material has a power storage density of 15000 W/kg and an energy storage density of 12000 Whour/kg. Preferred Components: The electrode material contains carbon, alloys of silicon, lithium, germanium, tin, aluminum, or antimony, lithium titanate, lithium-titanium-containing compound (Li4-yAyTi5xMxO12, where A is magnesium, calcium, or aluminum, and M is germanium, iron, cobalt, nickel, manganese, zirconium, molybdenum, vanadium, or tantalum), lithium-containing compound (Li1+x(M,N)1-xO2, where M is cobalt, nickel, or manganese, and N is aluminum, titanium, iron, chromium, zirconium, molybdenum, vanadium, tantalum, magnesium, zinc, gallium, boron, calcium, cerium, yttrium, niobium, strontium, barium, or cadmium), lithium oxide-containing compound ((Li,A)x(M,N)zOv-wXw, where A is alkali metal or lanthanide, M is cobalt, nickel, or manganese, N is aluminum, titanium, iron, chromium, zirconium, molybdenum, vanadium, tantalum, magnesium, zinc, gallium, boron, calcium, cerium, yttrium, niobium, strontium, barium, or cadmium, and X is fluorine or silicon), lithium-iron-phosphate-containing compound (LiFePO4(Li,A)(M,B)PO4, where A or B is alkali metal, alkaline-earth metal, or lanthanide, and M is iron, cobalt, manganese, nickel, titanium, copper, zinc, or chromium), or lithium-vanadium-phosphate-containing compound (LiVPO4F,(Li,A)2(L,B)PO4F, where A or B is alkali metal, alkaline-earth metal, or lanthanide, and M is iron, cobalt, manganese, nickel, titanium, or copper). The inorganic material is chalcogenide, halide, silicide, boride, nitride, phosphide, arsenide, antimonide, carbide, oxynitride, or carbonitride of element chosen from zinc, aluminum, indium, tin, titanium, lithium, zirconium, hafnium, vanadium, niobium, chromium, tungsten, iron, cobalt, manganese, nickel, calcium, tantalum, cadmium, cerium, bismuth, scandium, rhenium, palladium, silver, cadmium, ruthenium, lanthanum, praseodymium, neodymium, samarium, europium, magnesium, copper, yttrium, gallium, germanium, mercury, sulfur, selenium, tellurium, boron, carbon, or iodine. The precursor used during the coating method is nitric acid.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The solvent used during the coating method is water and/or alcohol. The acid used during the coating method is citric acid.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The polymeric compound used during the coating method is polyethylene glycol and/or polypropylene glycol.