Abstract: Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200° C.
Type:
Application
Filed:
August 18, 2023
Publication date:
December 7, 2023
Applicant:
RAYMOR INDUSTRIES INC.
Inventors:
Jens KROEGER, Nicholas LAROUCHE, Frédéric LAROUCHE, Matthieu BALMAYER
Abstract: Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight. Also provided are Graphene nanosheets having a polyaromatic hydrocarbon concentration of about 0.01% to about 0.5%.
Type:
Grant
Filed:
February 17, 2023
Date of Patent:
September 19, 2023
Assignee:
RAYMOR INDUSTRIES INC.
Inventors:
Jens Kroeger, Nicholas Larouche, Frédéric Larouche, Matthieu Balmayer
Abstract: Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight. Also provided are Graphene nanosheets having a polyaromatic hydrocarbon concentration of about 0.01% to about 0.5%.
Type:
Application
Filed:
February 17, 2023
Publication date:
June 22, 2023
Applicant:
RAYMOR INDUSTRIES INC.
Inventors:
Jens KROEGER, Nicholas LAROUCHE, Frédéric LAROUCHE, Matthieu BALMAYER
Abstract: Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200° C.
Type:
Grant
Filed:
July 18, 2022
Date of Patent:
March 21, 2023
Assignee:
RAYMOR INDUSTRIES INC.
Inventors:
Jens Kroeger, Nicholas Larouche, Frédéric Larouche, Matthieu Balmayer
Abstract: Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200° C.
Type:
Application
Filed:
July 18, 2022
Publication date:
February 9, 2023
Applicant:
RAYMOR INDUSTRIES INC.
Inventors:
Jens KROEGER, Nicholas LAROUCHE, Frédéric LAROUCHE, Matthieu BALMAYER
Abstract: Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T.) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200° C.
Type:
Grant
Filed:
February 8, 2018
Date of Patent:
August 23, 2022
Assignee:
RAYMOR INDUSTRIES INC.
Inventors:
Jens Kroeger, Nicholas Larouche, Frédéric Larouche, Matthieu Balmayer
Abstract: Provided are plasma processes for producing graphene nanosheets comprising injecting into a thermal zone of a plasma a carbon-containing substance at a velocity of at least 60 m/s standard temperature and pressure STP to nucleate the graphene nanosheets, and quenching the graphene nanosheets with a quench gas of no more than 1000° C. The injecting of the carbon-containing substance may be carried out using a plurality of jets. The graphene nanosheets may have a Raman G/D ratio greater than or equal to 3 and a 2D/G ratio greater than or equal to 0.8, as measured using an incident laser wavelength of 514 nm. The graphene nanosheets may be produced at a rate of at least 80 g/h. The graphene nanosheets can have a polyaromatic hydrocarbon concentration of less than about 0.7% by weight.
Type:
Grant
Filed:
August 31, 2020
Date of Patent:
November 24, 2020
Assignee:
RAYMOR INDUSTRIES INC.
Inventors:
Jens Kroeger, Nicholas Larouche, Frédéric Larouche
Abstract: Provided are plasma processes for producing graphene nanosheets comprising injecting into a thermal zone of a plasma a carbon-containing substance at a velocity of at least 60 m/s standard temperature and pressure STP to nucleate the graphene nanosheets, and quenching the graphene nanosheets with a quench gas of no more than 1000° C. The injecting of the carbon-containing substance may be carried out using a plurality of jets. The graphene nanosheets may have a Raman G/D ratio greater than or equal to 3 and a 2D/G ratio greater than or equal to 0.8, as measured using an incident laser wavelength of 514 nm. The graphene nanosheets may be produced at a rate of at least 80 g/h. The graphene nanosheets can have a polyaromatic hydrocarbon concentration of less than about 0.7% by weight.
Type:
Grant
Filed:
December 20, 2017
Date of Patent:
October 6, 2020
Assignee:
RAYMOR INDUSTRIES INC.
Inventors:
Jens Kroeger, Nicholas Larouche, Frédéric Larouche
Abstract: Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T.) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200° C.
Type:
Application
Filed:
February 8, 2018
Publication date:
December 19, 2019
Applicant:
RAYMOR INDUSTRIES INC.
Inventors:
Jens KROEGER, Nicholas LAROUCHE, Frédéric LAROUCHE, Matthieu BALMAYER