TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The first particles are lithium-mixed metal oxides and phosphates, lithium nickel oxide (LiNiO2), lithium cobalt oxide (LiCoO2), lithium manganese oxide (LiMn2O4), lithium cobalt-manganese oxide (LiCoMnO4), lithium-zinc-antimony (LiZnSb), lithium iron phosphate (LiFePO4) (preferred) and lithium iron fluorophosphate (Li2FePO4F). The lithium active compound particles and carbon particles have an average size of less than 200 nm. The first aerosol of lithium active compound is an aerosol of lithium iron phosphate particles or its precursor. Preferred Process: The first aerosol is formed by atomizing a solution and the second aerosol is formed by flame synthesis. The first aerosol of lithium iron phosphate particles or its precursor is passed through a flame produced by the combustion of a hydrocarbon and oxidant which is used to form the second aerosol of carbon particles. The second aerosol of carbon particles is formed by the combustion of a hydrocarbon with an oxidant. The process for forming a composite further comprises adding a dopant to the multicomponent material.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The apparatus comprises a first burner for forming the first aerosol and a second atomizer for forming the second aerosol. The first or second burner or atomizer has a nozzle or aperture in the form of a slot. The chamber or exit port is configured in the form of a slot. The first and second burner or atomizer and the chamber and exit port are configured in the form of a slot. EXAMPLE - Mixed suspension of acetylene black particles (40 nm) and platinum particles (20 nm) was prepared in approximately 100% pure ethanol. The mass concentrations of carbon and platinum were 0.5 mg/ml and 2 mg/ml, respectively. The suspension was atomized in a second atomizer at a rate of 1 ml/minute. After 10 minutes deposition onto a 1 inch diameter piece of carbon filter, the resulting dark, fluffy, uniform film was weighed about 3.2 mg.