NOVELTY - An iron source and a reducing agent are added to lithium phosphate slurry (SP1) formed by reacting lithium source and phosphoric acid source to obtain a suspension liquid (SP2). The suspension liquid is reacted at high temperature and high voltage to obtain crude product (SP3) containing lithium iron phosphate. The crude product is separated to main product (SP5) containing lithium iron phosphate and solution (SP4) containing another product, and to obtain an electrode material.    USE - Manufacture of electrode material used for secondary battery for portable electronic device and hybrid motor vehicle.    ADVANTAGE - The method enables efficient and economical manufacture of electrode material, without environmental pollution.    DETAILED DESCRIPTION - An iron source and a reducing agent are added to lithium phosphate slurry formed by reacting lithium source and phosphoric acid source to obtain a suspension liquid. The suspension liquid is reacted at high temperature and high voltage to obtain crude product containing lithium iron phosphate. The crude product is separated to main product containing lithium iron phosphate and solution containing another product, and to obtain an electrode material. An alkali (a) containing calcium hydroxide or calcium oxide (50 mol% or less) is added to the solution containing another product to remove impurity. Lithium source and phosphoric acid source are added to the solution to which impurity is removed and mixed such that the composition ratio of lithium and phosphorus in the solution is 3:1. An alkali (b) is added to the solution to obtain lithium phosphate slurry. The obtained lithium phosphate slurry is recycled to form suspension liquid. An INDEPENDENT CLAIM is included for recovery of lithium phosphate.    DESCRIPTION OF DRAWING(S) - The drawing shows the flowchart of manufacture of the electrode material. (Drawing includes non-English language text)    Lithium phosphate slurry (SP1)    Suspension liquid (SP2)    Crude product (SP3)    Solution containing another product (SP4)    Main product containing lithium iron phosphate (SP5)