ROD-SHAPED NANO IRON OXIDE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

摘要

Disclosed in the present invention are a rod-shaped nano iron oxide electrode material and a preparation method therefor. The preparation method is: using FeCl3?6H2O, ammonium dihydrogen phosphate and water for hydrothermal reaction as raw materials, and washing the resulting precipitates to obtain rod-shaped nano iron oxide. The nano iron oxide is in a rod shape with an average diameter of 60-80 nm, a length of 250-300 nm, a purity of more than 99.9% and a crystal phase α-Fe2O3. The rod-shaped nano iron oxide electrode material can be used not only as a positive electrode active material for lithium ion batteries, but also as a negative electrode active material for lithium ion batteries. The raw materials used in the preparation method are easily available, nontoxic and free from environmental pollution; the preparation process is simple and convenient to operate, and suitable for large-scale industrial production. The use of the rod-shaped nano iron oxide electrode material as the positive or negative electrode active material for lithium ion batteries leads to such advantages as low cost, excellent electrochemical performances, good chemical stability of the electrode material, high specific capacity, and small polarization of the charge and discharge platform.