| abstract |
The invention relates to the technical field of lithium ion batteries, in particular to a lithium iron manganese phosphate precursor and a preparation method and application thereof. The preparation method of the lithium iron manganese phosphate precursor provided by the present invention includes the following steps: 1) mixing iron source, manganese source, phosphorus source and water to prepare a mixed solution; 2) heating and stirring the mixed solution, adding alkali to adjust the solution The pH value is 1.5-5, and the reaction is stirred to obtain the lithium iron manganese phosphate precursor; the iron source is a trivalent iron source, and the manganese source is a trivalent manganese source; the heating and stirring temperature in step 2) is 30-99°C, the heating and stirring speed is 100-1000rpm, the stirring reaction temperature is 30-99°C, the stirring reaction speed is 600-1000rpm, and the stirring reaction time is 3-10h. The precursor prepared by the preparation method provided by the invention has good electrochemical performance, high capacity and better cycle performance of the ferromanganese phosphate positive electrode material obtained by using the precursor. |