The invention discloses a synthesis method of a
metal oxide material, which belongs to the field of
oxide materials, and comprises the following steps: step 1, selecting
metal salts corresponding to more than five
metal elements, and completely dissolving the
metal salts in a reducing substance containing hydroxyl functional groups until the
metal salts are completely dissolved to form a solution; the metal element range is composed of Li, Na, K, Mg, Ca, Al, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Zr, Nb, Mo, Ru, Rh, Pd, Cd, Sn, Cs, La, Ba, Ce, Nd, W, Re, Ir, Pt and Bi. 2,
tannic acid is used as a
reducing agent and added into the solution, and a
mixed solution is formed; and step 3, adding alkali into the
mixed solution for reaction to obtain the multi-element
amorphous metal oxide. The multi-element
amorphous metal oxide can be prepared, the cost is low, the operation is simple and easy, the production period is short, and the
energy consumption is low.