Graphene oxide and method of production thereof
AssigneeBaoshan Iron & Steel Co., Ltd.
InventorsYulin Zhong, Dan Li, George Philip Simon
Life of this patent
Estimating the term…
Abstract
A method of producing an electrochemically derived graphene oxide and product produced therefrom. The method comprises locating graphite particles within an electrochemical cell having a working electrode, counter electrode, and an aqueous acid electrolyte, the working electrode being positioned within the electrolyte to contact at least a portion of the graphite particles; agitating the graphite particles within the electrolyte; and applying a potential difference between the working electrode and counter electrode, thereby resulting in electrochemical exfoliation and oxidation of the graphite particles to produce graphene oxide.
Claims18
A method of producing graphene oxide comprising:
- locating loose graphite particles within an electrochemical cell having a working electrode, counter electrode, and an aqueous acid electrolyte, the working electrode being positioned within the electrolyte to contact at least a portion of the graphite particles, wherein the working electrode includes a conductive mesh, the electrochemical cell includes a graphite container comprising a glass cylindrical container, and the glass cylindrical container has a base formed from a piece of acid-resistant membrane with pore size of <1 μm to retain graphite and graphene oxide particles within the graphite container, the working electrode is placed inside the graphite container the graphite particles are located, and retained within the graphite container, and separated from the counter electrode within the electrochemical cell;
- agitating the graphite particles within the electrolyte to create a graphite slurry vortex;
- and
- applying a potential difference between the working electrode and counter electrode, thereby resulting in electrochemical exfoliation and oxidation of the graphite particles to produce graphene oxide.
An apparatus for producing graphene oxide by electrochemical exfoliation of loose graphite particles, the apparatus including:
- a fluid housing configured to house an aqueous acid electrolyte;
- a working electrode being positioned within the electrolyte and configured to engage graphite particles located in the apparatus, wherein the working electrode includes a conductive mesh, the electrochemical cell includes a graphite container comprising a glass cylindrical container, and the glass cylindrical container has a base formed from a piece of acid-resistant membrane with pore size of <1 μm to retain graphite and graphene oxide particles within the graphite container, the working electrode is placed inside the graphite container the graphite particles are located, and retained within the graphite container, and separated from the counter electrode within the electrochemical cell;
- a counter electrode separated from the working electrode and graphite particles;
- a potentiostat for creating a potential difference between the working electrode and counter electrode;
- and
- an agitation arrangement, which in use, agitates the graphite particles within the electrolyte.
Dependencies are inferred from the claim text.