METHOD FOR PREPARING SILICON CARBIDE (SiC) NANOMATERIAL USING SOLID WASTE

Abstract

A method for preparing a silicon carbide (SiC) nanomaterial using a solid waste is provided. The method includes the following steps: subjecting coal gangue to activation and acid leaching in sequence to obtain a coal gangue silicon slag; and mixing the coal gangue silicon slag and a high-carbon solid waste, and subjecting a resulting mixture to carbothermal reduction, and then subjecting a resulting reduction product to roasting and acid pickling in sequence to obtain the SiC nanomaterial; wherein the high-carbon solid waste has a carbon content of 70 wt % to 80 wt %; the coal gangue has a purity of not less than 95%; and the SiC nanomaterial has a bandgap of not less than 2.45 eV, a specific capacity of not less than 270 mAh/g, and a resistivity of not less than 1,190 Ω·cm.

Dependencies are inferred from the claim text.