TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The first electroactive material comprises metal complex of formulae (LiMPO4) and (AMa1xMbxPO4), preferably lithium iron phosphate, lithium manganese phosphate and/or lithium vanadium fluorophosphate. The second electroactive material is a metal oxide comprising lithium cobalt oxide (LiCoO2), lithium nickel-cobalt oxide (LiNiCoO2), lithium nickel manganese cobalt oxide of formula (Li(NiMnCo)1/3O2), lithium nickel manganese of formula (Li(NiMn)1/2O2), lithium-nickel-cobalt of formula (LiNixCo1-xO2) and lithium vanadium pentoxide (LiV2O5). The agglomerated particles comprise 30-95 wt.% of the nanoparticles of the first electroactive material and 70-5 wt.% of the nanoparticles of the second electroactive material. The nanoparticles of the first electroactive material and the second electroactive material each have an average particle size of 1-500 nm. The agglomerated particles further comprises: one or more additives; and a metal or metal oxide. The metal is aluminum, titanium or chromium. The agglomerates particles further one or more binders. The binder is: a mixture of lithium nitride and lithium phosphate; a mixture of lithium phosphorus oxynitride and lithium phosphate; and metal compound of formulae (Li(1+xa+y1)(A1,Ga)xa(Ti,Ge)2xaSiy1P(3-y1)O12) and (LixaaSiy2M1zOvNw). The agglomerates comprises 30-95 wt.% of the nanoparticles of the first electroactive material, 70-5 wt.% of the nanoparticles of the second electroactive material, and 0.1-5 wt.% of the binders. The particles comprises a first electroactive material and one or more types of nanoparticles of electroactive materials that are different from the first electroactive material, where the nanoparticles are embedded in the particle of the first electroactive material.M = transition metal comprising Ti, V, Cr, Mn, Fe, Co and Ni;A = Li or Na;Ma1 = Fe, Co or Mn;Mb = Mg, Ca, Zn, Ni, Co, Cu, Al, B, Cr or Nb;x = 0.01-0.30;xa = 0-1;y1 = 0-1;xaa = 0.3-0.46;y2 = 0.05-0.15;z = 0.016-0.05;v = 0.42-0.05;w = 0-0.029; andM1 = Nb, Ta or W.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The additive is carbon. The binder is coal tar, solid ionic conductor, asphalt pitch and/or a polymeric binder. The polymer binder is polytetrafluoroethylene, carboxymethyl cellulose, polyvinylidene fluoride, polyvinyl alcohol or styrene butadiene rubber. EXAMPLE - Iron oxide particles were mixed with lithium phosphate and magnesium hydroxide particles in the presence of carbon. To the mixture was then added to nanoparticles of a second electroactive material and thoroughly mixed again. The resulting mixture was heated under nitrogen at an elevated temperature of 700-850 degrees C to yield electroactive agglomerated particles.