Method for preparing large-specific-surface-area porous nickel oxide microspheres

The invention discloses a method for preparing large-specific-surface-area porous nickel oxide microspheres. The method comprises the following steps of: preparing and synthesizing a mixed solution by taking nickel nitrate and urine as raw materials, taking hexadecyl trimethyl ammonium bromide as a surfactant, taking absolute ethanol and deionized water as washing agents and refining raw materials; heating in a reaction kettle for preparing hydrogen nickel carbonate; and washing, performing suction filtration, drying in vacuum, and baking to obtain large-specific-surface-area porous nickel oxide microspheres. The preparation method has the advantages of advanced process, short process flow, small using amount of raw materials, detailed and accurate data, high product yield which can be up to 95 percent and high product purity, which can be up to 98.5 percent; the specific surface area of the product, i.e., nickel oxide microspheres is 748.25m /g, microsphere particles are less than or equal to 10 mum, irregul