NOVELTY - Positive electrode material (I) comprises particles having complex oxide (OC1) core, at least part of a complex oxide (OC2) coating and an adhesive carbon surface deposit, is claimed, where the: material is complex oxide (OC1) having a higher potential of greater than 2.5 V and is oxides of an alkali metal and at least one element comprising e.g. manganese, gold, silver, and copper; and complex oxide (OC2) is an alkali metal oxide and at least one metal having a catalytic effect on the reaction of carbon deposition, and the metal is iron, molybdenum, nickel, platinum and palladium.    USE - (I) is useful in positive electrode, which is useful in the manufacture of battery (claimed), preferably lithium battery.    ADVANTAGE - (I) has high energy density; and good electronic and ionic conductivity.    DETAILED DESCRIPTION - Positive electrode material (I) comprises particles having complex oxide (OC1) core, at least part of a complex oxide (OC2) coating and an adhesive carbon surface deposit, is claimed, where the: material is complex oxide (OC1) having a higher potential of greater than 2.5 V and is oxides of an alkali metal and at least one element comprising manganese, cobalt, germanium, gold, silver, and copper; and complex oxide (OC2) is an alkali metal oxide and at least one metal having a catalytic effect on the reaction of carbon deposition, and the metal is iron, molybdenum, nickel, platinum and palladium. INDEPENDENT CLAIMS are included for:    (1) preparing the material comprising: (a) preparing oxide particles (OC1) from its precursors; (b) introducing the oxide particles (OC1) into a solution of precursor oxide (OC2) and implementation of a heat treatment to react the precursor oxide (OC2); and (c) contacting the oxide particles (OC1) having a coating of oxide (OC2), with carbon organic precursor and implementation of a heat treatment to reduce the carbon organic precursor;    (2) electrode (Q) comprising a composite material deposited on a current collector, where the composite material includes the material (I) as active ingredient; and    (3) battery comprising a positive electrode, negative electrode and an electrolyte, where the: negative electrode is a lithium sheet or lithium intermetallic alloy, or a material capable of inserting lithium ions reversibly; and electrolyte includes at least one lithium salt dissolved in a solvent comprising polar aprotic liquid solvents optionally gelled by the addition of a polymer and solvating polymers optionally plasticized by an aprotic liquid solvent, where the positive electrode is an electrode (Q).