NOVELTY - Lithium metal composite oxide particles comprise secondary particles in an elongated shape, each comprised of primary particles with an average particle size of 0.1-1 mum so aggregated to form voids, where the secondary particle has a columnar or planar shape and an average size in a long length direction of 5-15 mum.    USE - For electrode structure for lithium secondary battery.    ADVANTAGE - The inventive lithium metal composite has excellent properties and provides a secondary battery having capacity and excellent high-rate discharge characteristics and charge/discharge cycle characteristics.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (A) a process of producing the lithium metal composite oxide particles comprising mixing a cobalt-salt containing aqueous solution, a surfactant and unsubstituted or substituted urea to prepare a mixed solution; heating the mixed solution or adding an alkali component to the mixed solution to raise the pH value of the mixed solution to deposit a cobalt-containing compound; mixing a lithium-containing material with the deposited cobalt-containing compound or a cobalt-containing oxide obtained by heat-treating the deposited cobalt-containing compound to prepare a mixture; and calcining the mixture in air or oxygen;    (B) an electrode structure for a lithium secondary battery using intercalation and deintercalation reactions of lithium ions, which comprises the lithium metal composite oxide particles;    (C) a process of producing an electrode structure for a lithium secondary battery using intercalation and deintercalation reactions of lithium ions, comprising producing lithium metal composite oxide particles, and producing electrode structure using the lithium metal composite oxide particles; and    (D) a lithium secondary battery comprising a negative electrode, a positive electrode, an electrolyte and a battery case, and using intercalation and deintercalation reactions of lithium ions for charging/discharging, where the positive electrode comprises the electrode structure.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic-conceptual view of the lithium metal composite oxide particles.