NOVELTY - Manufacturing lithium-iron phosphorus oxide, comprises either: (a) manufacturing olivine crystalline structure primary particles, (b) mixing primary particles and conductive materials, and (c) drying, manufacturing secondary particles by cohering primary particles and conductive material, and dispersing between lithium-iron phosphorus oxide particles; or (i) precipitating transition metal hydroxide by mixing precursors and alkylation agent, (ii) synthesizing lithium-iron phosphorus oxide, and (iii) dispersing conductive material with lithium-iron phosphorus oxide, drying and calcining.    USE - The battery pack is useful as a power source for a medium-to large-sized device (e.g. an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle or a power storage system) (all claimed).    ADVANTAGE - The battery is provided with high capacity due to the addition of small amounts of conductive material.    DETAILED DESCRIPTION - Manufacturing lithium-iron phosphorus oxide, comprises either: (a) manufacturing olivine crystalline structure primary particles, (b) mixing primary particles and conductive materials, and (c) drying the obtained mixture, and manufacturing secondary particles by cohering the primary particles and conductive material and dispersing between lithium-iron phosphorus oxide particles; or (i) precipitating the transition metal hydroxide by primary mixing process of precursors and alkylation agent, (ii) synthesizing the lithium-iron phosphorus oxide by performing secondary mixing process of the mixture obtained in the step (i) and water, and (iii) dispersing the conductive material with the synthesized lithium-iron phosphorus oxide obtained in the step (ii), and drying the obtained slurry and calcining. INDEPENDENT CLAIMS are also included for:    (1) a positive electrode mixture comprising the lithium-iron phosphorus oxide of the olivine crystalline structure as an anode active material;    (2) a secondary battery anode coated on a current collector by the positive electrode mixture;    (3) a lithium secondary battery comprising the anode;    (4) a battery module comprising the lithium secondary battery in an unit cell; and    (5) a battery pack comprising the battery module.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of manufacturing lithium-iron phosphorus oxide (Drawing includes non-English language text).    Primary particles of olivine crystal structure manufacturing step (1)    Conductive material and primary particles mixing step (2)    Drying and secondary particles manufacturing step (3)