Abstract: The invention describes the chemical technology for producing cathode materials for lithium-ion batteries. The object of this invention is to develop a simple, clean and less expensive method for producing a highly dispersed composite cathode materials based on lithium iron phosphates with a high specific product yield per reaction volume unit. The stated technical problem is solved due to the fact that in the process for producing the lithium iron phosphate comprising a mixing an iron compound with iron oxidation number in the range of +2.03÷+2.2 with the aqueous solution containing lithium and phosphate ions in the presence of carbonaceous reductant material, activating the mixture obtained to form a gel, and subsequent thermal treatment of the gel.