Patent ID: 7390472

Claim:
A method of producing olivine type nanostructured lithium metal phosphate of the formula, LiFe x M 1-x PO 4 , where 1≦x≦0.1 and M is a metal cation and having an olivine structure, comprising the following steps: (a) dispersing iron dextran nanoparticles in a liquid solution, (b) at least one of the steps of: 1) dissolving a metal salt in the liquid solution and 2) dispersing metal oxide nanoparticles in the liquid solution, (c) dissolving a phosphate ion containing chemical precursor in the liquid solution, (d) dissolving a lithium containing salt in the liquid solution, (e) heating the solution to promote the precipitation of LiFe x M 1-x PO 4 precursor material, (f) evaporating the liquid and calcining the LiFe x M 1-x PO 4 precursor material for removing volatiles, and (g) annealing the LiFe x M 1-x PO 4 precursor material to form the olivine type nanostructured LiFe x M 1-x PO 4 compound.