Abstract
Citric acid, nitric acid, ferrous phosphate and lithium carbonate as raw materials, the precursor Fe3(PO4)2 were synthesized by precipitation method, and nano-porous lithium iron phosphate (LiFePO4) was prepared by modified sol-gel method. The influence of pH to purity and yield of precursor Fe3(PO4)2 and sintering temperature to purity of LiFePO4 were studied. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy techniques (TEM) were used to character the phase and morphology of nano-porous lithium iron phosphate (LiFePO4).
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