Abstract

A method for producing graphene. The method includes loading an open-cell porous backbone material with particulate graphite, submersing at least part of the graphite-loaded porous backbone material in a solution, and applying a cathodic potential to the graphite-loaded porous backbone material, wherein the cathodic potential suffices to exfoliate graphene.

IPC Classes  ?

• C01B 32/19 - Preparation by exfoliation

Abstract

A method for the continuous production of graphene. The method includes flowing a suspension of graphite particles into a conductive, open-cell porous material that is disposed within a reaction vessel, applying a cathodic potential to the conductive, open-cell porous material, wherein the cathodic potential suffices to exfoliate graphene, and flowing a suspension of the exfoliated graphene out from the conductive, open-cell porous material.

IPC Classes  ?

• C01B 32/182 - Graphene
• C01B 32/184 - Preparation
• C01B 32/19 - Preparation by exfoliation
• C01B 32/198 - Graphene oxide
• C01B 32/21 - After-treatment
• C01B 32/225 - ExpansionExfoliation
• C25B 1/00 - Electrolytic production of inorganic compounds or non-metals
• C25B 1/135 - Carbon

Abstract

A method for the continuous production of graphene. The method includes flowing a suspension of graphite particles into a conductive, open-cell porous material that is disposed within a reaction vessel, applying a cathodic potential to the conductive, open-cell porous material, wherein the cathodic potential suffices to exfoliate graphene, and flowing a suspension of the exfoliated graphene out from the conductive, open-cell porous material.

IPC Classes  ?

• C25B 1/135 - Carbon
• C01B 32/19 - Preparation by exfoliation
• C01B 32/225 - ExpansionExfoliation

Abstract

A method for producing graphene. The method includes loading an open-cell porous backbone material with particulate graphite, submersing at least part of the graphite-loaded porous backbone material in a solution, and applying a cathodic potential to the graphite-loaded porous backbone material, wherein the cathodic potential suffices to exfoliate graphene.

IPC Classes  ?

• C01B 32/182 - Graphene
• C01B 32/184 - Preparation
• C01B 32/19 - Preparation by exfoliation
• C01B 32/21 - After-treatment
• C01B 32/22 - Intercalation
• C01B 32/225 - ExpansionExfoliation
• C25B 1/00 - Electrolytic production of inorganic compounds or non-metals
• C25B 1/135 - Carbon
• H01M 4/66 - Selection of materials
• H01M 4/70 - Carriers or collectors characterised by shape or form
• H01M 4/80 - Porous plates, e.g. sintered carriers
• H01M 10/052 - Li-accumulators
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

Compositions comprising hydrogenated and dehydrogenated graphite comprising a plurality of flakes. At least one flake in ten has a size in excess of ten square micrometers. For example, the flakes can have an average thickness of 10 atomic layers or less.

IPC Classes  ?

• H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• C01B 32/19 - Preparation by exfoliation
• C01B 32/198 - Graphene oxide
• C25B 1/00 - Electrolytic production of inorganic compounds or non-metals
• C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms
• C25B 9/40 - Cells or assemblies of cells comprising electrodes made of particlesAssemblies of constructional parts thereof
• C25B 11/043 - Carbon, e.g. diamond or graphene
• H01B 1/04 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of carbon-silicon compounds, carbon, or silicon
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

Compositions comprising hydrogenated and dehydrogenated graphite comprising a plurality of flakes. At least one flake in ten has a size in excess of ten square micrometers. For example, the flakes can have an average thickness of 10 atomic layers or less.

IPC Classes  ?

• H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• C01B 32/19 - Preparation by exfoliation
• C01B 32/198 - Graphene oxide
• C25B 1/00 - Electrolytic production of inorganic compounds or non-metals
• C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms
• C25B 9/40 - Cells or assemblies of cells comprising electrodes made of particlesAssemblies of constructional parts thereof
• C25B 11/043 - Carbon, e.g. diamond or graphene
• H01B 1/04 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of carbon-silicon compounds, carbon, or silicon
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

In a first implementation, a method for exfoliation of graphene flakes from a graphite sample includes compressing a graphite sample in an electrochemical reactor and applying a voltage between the graphite sample and an electrode in the electrochemical cell.

IPC Classes  ?

• C01B 32/19 - Preparation by exfoliation
• C01B 32/225 - ExpansionExfoliation
• B01J 19/08 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor

Abstract

In a first implementation, a method for exfoliation of graphene flakes from a graphite sample includes compressing a graphite sample in an electrochemical reactor and applying a voltage between the graphite sample and an electrode in the electrochemical cell.

IPC Classes  ?

• C01B 32/19 - Preparation by exfoliation
• C01B 32/225 - ExpansionExfoliation
• C25B 1/00 - Electrolytic production of inorganic compounds or non-metals

Abstract

Compositions comprising hydrogenated and dehydrogenated graphite comprising a plurality of flakes. At least one flake in ten has a size in excess of ten square micrometers. For example, the flakes can have an average thickness of 10 atomic layers or less.

IPC Classes  ?

• C25B 1/00 - Electrolytic production of inorganic compounds or non-metals
• C01B 32/19 - Preparation by exfoliation
• C25B 9/08 - Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
• C25B 11/12 - Electrodes based on carbon
• C25B 9/16 - Cells or assemblies of cells comprising at least one electrode made of particles; Assemblies of constructional parts thereof
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures
• H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers

Abstract

Compositions comprising hydrogenated and dehydrogenated graphite comprising a plurality of flakes. At least one flake in ten has a size in excess of ten square micrometers. For example, the flakes can have an average thickness of 10 atomic layers or less.

IPC Classes  ?

• C01B 32/182 - Graphene
• C01B 32/20 - Graphite
• H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx