Lithium iron phosphate powders for Li-ion battery

Ferrous (II) phosphate (Fe(PO)) powders, lithium iron phosphate (LiFePO) powders for a Li-ion battery and methods for manufacturing the same are provided. The ferrous (II) phosphate powders are represented by the following formula (I): FeM(PO)·yHO (I) wherein, M, x, and y are defined in the specification, the ferrous (II) phosphate powders are composed of plural flake powders, and the length of each of the flake powders is 0.2-10 µm.