TECHNOLOGY FOCUS - ELECTRONICS - Preferred Components: The active material is an electroactive material. The active material is silicon that is doped or undoped . (a) has a principle diameter of 100 nm to 100 mu m, minor diameter of at least 10 nm, and an aspect ratio of 1:1-100:1, and comprises native particles, pillard particles, porous particles, porous particle fragments, fractals, fibers, fiber bundles, substrate particles or scaffold structures.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The third conductive component is carbon black, lamp black, acetylene black, ketjen black and/or metal fibers. The second active particle component comprises: an electoactive material and second polymeric coating; and graphite (preferred), hard carbon, graphene, carbon fibers and/or carbon nanotubes. The composite material further comprises a third conductive component. The composite material comprises at least 50 wt.% the electoactive material comprising a first composite particle. The electroactive material comprises at least 0.5 wt.% silicon in the form of the composite particle, and at least 5 wt.% electroactive carbon. (a), (b), second particle component, and the binder are present at a weight ratio of 9:0.05:88:2.95-9:0.5:88:2.5. (a), (b), second particle component, binder and third conductive component are present at a weight ratio of 9:0.05:85:2.95:3-9:0.5:85:2.5:3. The graphite comprises natural graphite, artificial graphite and/or meso-carbon micro beads. The substrate is conductive substrate and comprises copper, steel or aluminum foils.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: (b): completely or partially covers the surface of (a); is porous and adherent to surface of (a); comprises a polymer having a molecular weight of 100000-3000000; includes functional groups, which react with complementary functional groups on the surface of (a); comprises at least one functional group comprising carboxylic acid (preferred), sulfonic acid, amide or its alkali or alkali earth metal salt, preferably carboxylic acid or its alkali or alkali earth metal salt; comprises a functionalized polymer having 60-100% degree of salt formation, where the polymer salt is soluble in N-methyl pyrrolidone; is an ionically conductive or electrically conductive polymer or a polymer comprising sodium salt of polyacrylic acid, carboxy methyl cellulose, alginic acid or polyethylene maleic anhydride, preferably sodium polyacrylate having 60-100% degree of salt formation; has a thickness of 5-40 nm; and is provided in the form of a solution. The second coating polymer: is an ionically conducting polymer or electrically conductive polymer and has a molecular weight of 100000-3000000, or functionalized coating polymer comprising functional groups, which react with complementary functional groups on the surface of second particle component; comprises at least one functional group comprising carboxylic acid, sulfonic acid, amide or its alkali or alkali earth metal salt; and is polyacrylic acid, polyethylene maleic anhydride, alginic acid, carboxy methyl cellulose or its alkali or alkali earth metal. The first coating polymer solution: has a concentration of 5-25%; comprises a polymer having a molecular weight of 100000-3000000; has a viscosity of 40-60 mPa.s; and comprises first and second solvent component, where the volume ratio of first solvent component to second solvent component is 19:2-1:1, the first coating polymer is soluble in first solvent component and insoluble in second solvent component and second solvent component has higher boiling point than first solvent component. The binder: has molecular weight of 100000-3000000; is ionically conductive polymer or electrically conductive polymer; adheres to the second particle component and first composite particle; has Young's modulus of at least 0.3GPa; and is polyvinylidenefluoride (preferred) or its copolymer. The liquid carrier comprises a solution of polymeric binder. Preferred Method: The method (M1) further comprises drying the isolated coated particles. (a) is surface treated with prior to exposing to the first coating polymer. The removal of second solvent component gives the composite particle comprising porous coat. The coated particles are dried using at least one technique comprising tray drying, spray drying, oven drying, fluidized bed drying or roll drying. The method (M2) further comprises drying the cast slurry. The method (M3) further comprises adding a surfactant to the liquid carrier to maintain the stability of the suspension. EXAMPLE - 2.22 g Polyacrylic acid was mixed with sodium hydroxide in 1 l water. The resulting mixture was stirred to obtain a clear solution. 50 g Silgrain HQ (RTM: Native silicon particle) was dispersed in 500 g clear solution (containing sodium polyacrylate). The water was evaporated using a hot plate at 150 degrees C to produce sodium polyacrylic acid coated silicon. The coated silicon was dried under dynamic vacuum conditions at 80 degrees C for 5 hours to give silicon particles having sodium polyacrylate coating.