Lithium iron phosphate prepared from iron phosphate and lithium phosphate and preparation method of lithium iron phosphate

The invention relates to the technical field of lithium iron phosphate, in particular to lithium iron phosphate prepared from iron phosphate and lithium phosphate and a preparation method of the lithium iron phosphate. The invention discloses lithium iron phosphate prepared from iron phosphate and lithium phosphate. The weight ratio of Fe to P in an iron phosphate crystal is 0.95-0.985; the preparation method of the lithium iron phosphate comprises the following steps: mixing iron phosphate, phosphoric acid and lithium phosphate, adding an ethanol solution, carrying out multi-stage mixing and grinding, and then carrying out spray drying to obtain a precursor; and carrying out heat treatment on the precursor under the protection of nitrogen to generate the lithium iron phosphate material. The lithium iron phosphate provided by the invention has the advantages of high compaction density, high specific capacity and long cycle life. 本发明涉及磷酸铁锂的技术领域，特别是涉及一种应用磷酸铁、磷酸锂制备的磷酸铁锂及其制备方法。本申请公开了一种应用磷酸铁、磷酸锂制备的磷酸铁锂，所述磷酸铁晶体中Fe和