Method for preparing porous spherical stannous oxide nano material

Abstract

The invention relates to a method for preparing porous spherical stannous oxide nano material. The method comprises the steps of: slowly dripping a certain amount of prepared sodium hydroxide anhydrous ethanol solution into stannous chloride anhydrous ethanol solution, and stirring while dripping; after dripping, continuously stirring for 10-20min to obtain stannous oxide precursor liquid, wherein in the obtained stannous oxide precursor liquid, the molar concentration of dihydrated stannous chloride is controlled to be 0.125-0.25mol / L and the molar ratio between the dihydrated stannous chloride and sodium hydroxide is controlled to be 1: 2-1: 3.5; putting the prepared stannous oxide precursor liquid into a reaction kettle, wherein the filling degree is 80-90%; sealing the reaction kettle, and carrying out heat preservation on the reaction kettle in an electric constant temperature drying oven for 6-15h at the temperature of 130-170 DEG C; then naturally cooling the reaction kettle to room temperature; and carrying out centrifugation, washing and drying on the product to obtain gray black nano stannous oxide material. The method is simple in operation, mild in condition, easy in control of the condition, low in cost, less in pollution and easy for industrial production; and the prepared porous spherical stannous oxide nano material has the advantages of being even in morphology, high in component purity and the like.

Description

technical field [0001] The invention relates to a method for preparing a nanometer material, in particular to a method for preparing a porous spherical stannous oxide nanometer material. Background technique [0002] After entering the 21st century, energy and environmental issues have become two severe challenges facing mankind. The development and utilization of new clean energy has become an important science and technology related to the sustainable development of human society. As a new type of energy storage battery, lithium-ion battery has been widely used due to its high energy density and environmental friendliness, and it is also considered to be an important energy storage and conversion device in the future. Anode materials are one of the key factors affecting the performance of lithium-ion batteries. At present, commercial lithium-ion batteries are mainly based on carbon anode materials. However, the low theoretical specific capacity of carbon materials (graph...

AI Technical Summary

Problems solved by technology

However, since stannous oxide is a metastable compound, it is easily oxidized to other valence tin oxides during the hydrothermal reaction, and divalent tin ions are prone to hydrolysis reactions in aqueous solution, so the oxidation obtained by hydrothermal synthesis Stannous products often contain more impurities, which reduces the purity of the synthetic product

In order to improve the phase purity of stannous oxide nanomaterials, reducing reagents are often added during the synthesis process, which not only increases the production cost, but also complicates the entire synthesis process, increasing the difficulty in the controllable preparation of stannous oxide nanomaterials.

Images