PREPARATION METHOD OF IRON PHOSPHATE PRECURSOR FOR BATTERIES

Abstract: a preparation method of an iron phosphate precursor for batteries is disclosed and includes steps of: (a) providing an iron powder, wherein the iron powder has an apparent density of iron powder ranging from 2.3 g/cmto 2.6 g/cm, and a particle size composed of a first particle-size range and a second particle-size range, the first particle-size range is greater than the second particle-size range, and a weight of the iron powder in the second particle-size range accounts between 10% and 30% of the total weight of the iron powder; (b) providing a phosphoric acid to react with the iron powder to generate a first product; and (c) heat-treating the first product in an air or oxygen atmosphere to form the iron phosphate precursor.

Inventor(s): Kuan-Yin Fu, Jing-Xuan Wang, An-Feng Huang

CPC Classification: C01B25/375 (Phosphates of heavy metals)

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