TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The lithium iron phosphate powder is provided with a petal shape. The iron lithium phosphate powder has olivine structure. The lithium precursor is chosen from lithium hydroxide, lithium carbonate, lithium nitrate, lithium acetate dihydrate, lithium oxolate, lithium sulfate, lithium chloride and lithium bromide. The iron precursor is chosen from iron chloride, iron bromide, ferric iodide, ferrous sulfate, ferric nitrate, iron oxalate dehydrate, iron acetate and iron carbonate. The phosphorus precursor is chosen from phosphoric acid, monosodium phosphate, disodium phosphate, magnesium phosphate and monoammonium phosphate. The lithium precursor is chosen from lithium dihydrogen phosphate, lithium hydrogen phosphate and lithium phosphate. The phosphorus precursor is chosen from ferrous phosphate (Fe3(PO4)2) and ferrous phosphate (Fe(PO4)). The atmosphere or gas stream comprises nitrogen, helium gas, neon, argon, krypton, xenon, carbon monoxide, methane, nitrogen/hydrogen mixed gases. Preferred Properties: The angle of normal flat plane of lithium ion channel in lithium iron phosphate powder is preferably 30-65 degrees C. The iron lithium phosphate powder has width of 500 nm to 5 mu m.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic solvent in the mixed solution comprises surfactant, polymer electrolyte and stabilizing agent. The organic solvent is chosen from ethylene glycol, diethylene glycol, glycerol, triethylene glycol, tetraethylene glycol, dimethyl sulfoxide and dimethyl formamide. The interface active agent is hexadecyl trimethyl ammonium bromide, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate or Triton-X100 (RTM: t-octylphenoxypolyethoxyethanol). The stabilizing agent is polyvinyl alcohol or polyvinyl acetate.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The polymer electrolyte is polyethylene pyrrolidone, polyoxyethylene acid, polyethylene imine or polyacrylamide.