Hyper-capacity nanometer lithium iron phosphate anode material, preparing method of hyper-capacity nanometer lithium iron phosphate anode material and lithium ion battery

The invention discloses a hyper-capacity nanometer lithium iron phosphate anode material, a preparing method of the hyper-capacity nanometer lithium iron phosphate anode material and a lithium ion battery. The preparing method of the hyper-capacity nanometer lithium iron phosphate anode material comprises the following steps that a lithium source, an iron source and a phosphorous source are weighed according to the proportion and are all dissolved in a solvent to form a solution A, and a certain number of addition agents are added in the process; a carbon material is weighed and dispersed in the solvent, and a disperse solution B of the carbon material is obtained; the solution A and the solution B are fully mixed to form an even solution C; the solution is sprayed and dried under the protective gas atmosphere and the condition of the temperature ranging from 150 DEG C to 400 DEG C to obtain precursor powder, the precursor powder is heated to 500 DEG C to 700 DEG C, the reductive gas is inflated in the process, sintering is carried out for 1-100 min, and then the hyper-capacity nanometer lithium iron phosphate anode material is obtained. The material prepared through the method is high in purity and superior in performance. The method is simple and controllable in technology, and drying, crushing, sintering and other steps are omitted.