TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The mixture further contains nitrate of metal (preferably manganese, cobalt, nickel, calcium, magnesium, zinc, titanium, niobium, ytterbium, molybdenum, copper, gold, gallium, zirconium, vanadium and aluminum); and the molar ratio of metal to iron is 0.005-0.25:1. The mixture further contains a halogen compound (preferably lithium fluoride, lithium chloride, lithium bromide, and lithium iodide); and the molar ratio of halogen in the halogen compound to iron is 0.005-0.25:1. The drying is carried out at 80-160 degrees C for 2-40 hour. The sintering involves an inert atmosphere, heating to 600-800 degrees C at rate of l-10 degrees C/minute and holding at this temperature for 6-20 hour; or heating to 300-500 degrees C at rate of l-10 degrees C/minute in an inert atmosphere and holding at this temperature for 5-8 hour and then heating to 600-800 degrees C at rate of l-10 degrees C/minute and holding at this temperature for 8-20 hour. Preferred Components: The molar ratio of the lithium source, ferric oxide and phosphoric acid is Li:Fe:P=0.95-1.1:1:0.95-1.1; and relative to ferric oxide (100 weight parts), carbon source (30-110 weight parts) and solvent (125-500 weight parts). The ferric oxide has D50 not greater than 0.7 micron and D95 not greater than 5 micron. The ferric oxide has D50 (0.2-0.6 micron) and D95 (1.5-4.5 micron). The lithium source selected from lithium hydroxide, lithium hydroxide monohydrate, lithium carbonate, lithium phosphate, lithium phosphate dodecahydrate, lithium oxalate and lithium acetate.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The carbon source is selected from sucrose, glucose, fructose, lactose, and maltose; and the water soluble organic solvent is selected from methanol, ethanol and propanol. EXAMPLE - Lithium hydroxide (43.3 g), iron oxide (80.4 g) with median particle size D50 (0.37 micron) and D95 (2.50 micron), phosphoric acid (115 g), sucrose (38.2 g) and deionizied water (200 ml) were introduced into a reactor, stirred at 200 revolution per minute for 1.5 hour and dried at 120 degrees C for 8 hour to obtain a precursor. The precursor was heated to 690 degrees C at a rate of 5 degrees C/minute, sintered at 690 degrees C in nitrogen atmosphere for 8 hour, and naturally cooled to room temperature to give lithium iron phosphate positive electrode active material (test). Glycerol (2 ml) was dropwise added into deionized water (10 ml) and stirred well. Lithium nitrate (3.45 g), ferrous oxalate (9 g) and ammonium phosphate (5.8 g) were added, while high speed stirring, stirred for 1 hour, dried at 120 degrees C in nitrogen atmosphere. After elevating the temperature to 600 degrees C in nitrogen atmosphere, the dried product was baked for 24 hour and then naturally cooled to give lithium iron phosphate positive electrode active material (comparative). Both the materials were tested for particle size distribution. The test/comparative showed D10 value of 0.91/2.55 mu ; D50 of 3.84/8.55 mu ; and D90 of 7.10/19.35 mu respectively. Thus, lithium phosphate (test) has uniform particle size distribution and uniform particle size as compared to lithium phosphate (comparative).