The invention provides a flake metal oxide and its controllable synthesis method and application, comprising the steps of: adding a template agent into deionized water, and continuously stirring until the medicine is completely dissolved; the template agent is 2-methylimidazole or terephthalic acid Or 1,2,3,4-butane tetracarboxylic acid; metal salt is added to the above solution and continuously stirred, and the metal salt is an inorganic metal salt or acetylacetonate containing one of cobalt, nickel, manganese, zinc, and iron; The above-mentioned prepared solution is transferred to an oil bath for reaction, the above-mentioned product is cooled to room temperature, washed, dried, then put into a tube furnace for calcination, and finally a sheet-like metal oxide is obtained; the present invention has prepared The lithium battery anode material with a sheet shape adopts the static precipitation method, which is simple, reliable, and controllable. This structure can expand the interaction between the electrode and the electrolyte, enhance the surface and interface energy, offset the capacity loss, and provide a negative electrode material with high lithium battery performance.