Patent ID: 11967707
Assignee: ONED MATERIAL, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  C  Y | IPC B  C  H

Claim 0:
1. A method comprising:
providing a carbon-based porous substrate comprising a population of particles comprising at least one of natural graphite particles, synthetic graphite particles, graphene particles, or carbon black particles;
mixing deionized water with a copper source and a chelating agent to form a first aqueous solution comprising copper ions, wherein the copper source comprises at least one of copper sulfate, copper nitrate, copper chloride, or copper acetate and wherein the chelating agent comprises at least one of potassium sodium tartrate, EDTA, or polyols;
mixing deionized water with a reducing agent to form a second aqueous solution, wherein the reducing agent comprises at least one of sodium ascorbate or ascorbic acid;
mixing the first aqueous solution with the second aqueous solution to form Cu2O colloidal nanoparticles in an alkaline plating solution, the Cu2O colloidal nanoparticles formed via chemical reduction of the copper source, and wherein the pH and concentrations are adjusted to control the size distribution of the Cu2O colloidal nanoparticles;
depositing the Cu2O colloidal nanoparticles onto a surface of the carbon-based porous substrate by stirring a solution comprising the Cu2O colloidal nanoparticles and the carbon-based porous substrate until the solution is substantially depleted of the Cu2O colloidal nanoparticles;
loading the carbon-based porous substrate with the Cu2O nanoparticles deposited thereon into a reaction vessel, wherein the carbon-based porous substrate with the Cu2O nanoparticles deposited thereon form a packed bed in the reaction vessel; and
growing, in the reaction vessel, nanostructures on the carbon-based porous substrate from the Cu2O nanoparticles via a Vapor-Solid-Solid (VSS) synthesis technique, wherein the growing comprises mixing the packed bed while flowing one or more reactant gases in the reaction vessel during the nanostructure growing process; and wherein the nanostructures comprise silicon, germanium or a combination thereof.