PREPARATION METHOD AND APPLICATION OF SPINDLE-SHAPED IRON OXIDE NANO SINGLE CRYSTALS

The invention relates to the technical field of new energy materials, in particular to a preparation method and application of spindle-shaped iron oxide nano single crystals, which comprises the following steps: mixing an iron salt solution, urea and NaH2PO4 solution to obtain a mixed solution; carrying out hydrothermal reaction on the obtained mixed solution; centrifugally separating the obtained product, and drying to obtain the spindle-shaped iron oxide nano single crystals; the concentration of urea in the mixed solution is 0.1 mol/L-0.5 mol/L. Monodisperse spindle-shaped iron oxide nano single crystals can be prepared in batches by a simple method. The material has a single crystal structure, which is suitable for the transmission of electrons, reduces the dissipation of electrons during transmission, and can be prepared in batches with high yield and stable finished products.