NOVELTY - An electrode material manufacturing method involves selecting precursors for metal A and M, and component X and Y1, decomposing the precursors of A and M into carbon, and selecting an organic solvent. The precursors are mixed with the solvent to obtain a substantially homogenous mixture. The mixture is heated to the boiling point of the solvent and refluxed to produce a core shell structure comprising particles of metal component forming cores and coatings of carbon and to provide a carbon coating on the core shell structure resulting from the capping action of the solvent or surfactant.    USE - Method for manufacturing an electrode material that is utilized as cathode of a battery such as sodium-ion battery and lithium battery for use in vehicle (all claimed) such as electric vehicles and hybrid electric vehicles, electric cars, and green power stations such as solar powered power stations or wind parks.    ADVANTAGE - The method enables manufacturing the electrode material with improved electric storage capability, high charge/discharge rates, a good storage capacity and good working life. The electrode material can be operated in a sensible range of operating temperatures without utilization of excessive heating or cooling, and improves mechanical-stability of the battery.    DETAILED DESCRIPTION - An electrode material manufacturing method involves selecting precursors for metal A and M, and component X and Y1, decomposing the precursors of A and M, preferably M, including compounds of respective elements and the compound for M containing carbon units in the molecular formula, into carbon, selecting an organic solvent, mixtures of organic solvents or an organic solvent including surfactant which is able to partly dissolve one of the precursors and is miscible with precursor, the solvent having a boiling point close to and preferably above the decomposition temperature of the precursor for M. The precursors are mixed with the solvent to obtain a substantially homogenous mixture. The mixture is heated to the boiling point of the solvent and refluxed to produce a core shell structure comprising particles of metal component (AaMb(XY1(1,2, 3o r4))c) forming cores and coatings of carbon and to provide a carbon coating on the core shell structure resulting from the capping action of the solvent or surfactant to form nano-particles having an in- situ double carbon coating on the particles. The nano-particles having the amorphous or crystalline structure is separated from the remainder of the solvent and the precursors, where A is an alkali Metal, or an alkaline earth metal, preferably sodium, lithium, calcium, potassium, silver and magnesium, M is a transition metal, which is capable of undergoing oxidation to a higher valence state, preferably vanadium, iron, manganese, cobalt, titanium and/or nickel, X is phosphorus, silicon, germanium, boron, sulfur, arsenic and/or antimony and Y1 is oxygen, hydroxide, fluorine, chlorine, bromine and iodine, and a, b and c are not defined.INDEPENDENT CLAIMS are also included for the following:    (1) an electrode material obtained by the method    (2) a battery.