50results about How to "Solve the problem of uneven mixing" patented technology

The invention discloses a preparation method of a lithium iron phosphate anode material. The method comprises the steps of ultrasonically dispersing iron phosphate and lithium sources into deionized water, adding chitosan, cane sugar, pepsin, erepsin or trypsin, fully stirring and uniformly mixing, and placing into a sealed container. Relatively high CO2 concentration is kept in the sealed container. Under the regulation of biological organic large molecules, Li2CO3 crystals uniformly grow by taking the surfaces of iron phosphate particles as basal bodies, and a little of Mg<2+> can be added into a solution to control the growth of the Li2CO3 crystals. After reacting for several days, turbid liquid is filtered and washed for several times and placed into a drying box for drying to prepare a lithium iron phosphate precursor, and sintering is performed under gas shield to obtain the lithium iron phosphate anode material. According to the preparation method, the problem that the energy consumption is relatively large due to stirring and ball-milling in a conventional lithium iron phosphate material preparation process is solved; meanwhile, lithium carbonate prepared through biomimetic synthesis uniformly attaches to the peripheries of the iron phosphate particles, and the problem of nonuniform raw material mixing possibly existing in the preparation process of lithium iron phosphate is solved.