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US 12,281,015 B2Granted
Continuous manufacture of graphenic compounds
AssigneeCornell University
InventorsYong Lak Joo, Mohammed Alamer, Brian Williams
Life of this patent
Estimating the term…
Abstract
Provided herein are high throughput continuous or semi-continuous reactors and processes for manufacturing graphenic materials, such as graphene. Such processes are suitable for manufacturing graphenic materials at rates that are up to hundreds of times faster than conventional techniques, and have little batch-to-batch variation. Also provided herein are graphenic compositions of matter, including large, high quality and/or highly uniform graphene.
Claims55
A process for manufacturing a graphenic compound the process comprising:
- a. injecting a first stock into a first inlet of a continuous or semi-continuous reactor, the first stock comprising graphite and optionally one or more additives comprising a surfactant and/or thickening agent,
- wherein the continuous or semi-continuous reactor has a flow from the first inlet to the outlet, the flow being a non-vortex flow, or the continuous reactor is configured to produce a helical laminar or cylindrical Couette flow;
- and
- b. collecting the graphenic compound from an outlet of the continuous or semi-continuous reactor, the graphenic compound being collected downstream from the first inlet, and wherein the graphenic compound comprises:
- i) graphene, wherein at least 50% of the graphite is converted to graphene;
- ii) only graphene oxide collected after 1 minute comprising less than 1 wt. % graphite;
- or
- iii) reduced graphene oxide having a C/O atomic ratio of at least 10.
5 more elements
A process for manufacturing a graphenic compound the process comprising:
- a. injecting a first stock into a first inlet of a continuous reactor, the first stock comprising graphite and optionally one or more additives comprising a surfactant and/or thickening agent, wherein the continuous reactor is a continuous Taylor-Couette reactor;
- and
- b. collecting the graphenic compound from an outlet of the continuous reactor, the graphenic compound being collected downstream from the first inlet, and wherein the graphenic compound comprises:
- i) graphene, wherein at least 50% of the graphite is converted to graphene;
- ii) only graphene oxide collected after 1 minute comprising less than 1 wt. % graphite;
- or
- iii) reduced graphene oxide having a C/O atomic ratio of at least 10.
4 more elements
A process for manufacturing a graphenic compound the process comprising:
- a. injecting a first stock into a first inlet of a continuous reactor, the first stock comprising graphite and optionally one or more additives comprising a surfactant and/or thickening agent, wherein the continuous reactor comprises a reactor chamber into which the first stock is injected;
- the reactor-chamber being configured between an outer surface of a cylindrical body and an inner surface of a cylindrical bore, one or both of the cylindrical body and/or cylindrical bore configured to rotate around an axis thereof during manufacture of the graphenic compound;
- and
- b. collecting the graphenic compound from an outlet of the continuous reactor, the graphenic compound being collected downstream from the first inlet, and wherein the graphenic compound comprises:
- i) graphene, wherein at least 50% of the graphite is converted to graphene;
- ii) only graphene oxide collected after 1 minute comprising less than 1 wt. % graphite;
- or
- iii) reduced graphene oxide having a C/O atomic ratio of at least 10.
5 more elements
A process for manufacturing a graphenic compound the process comprising:
- a. injecting a first stock into a first inlet of a continuous reactor, the first stock comprising graphite and optionally one or more additives comprising a surfactant and/or thickening agent, wherein the continuous reactor comprises a reactor chamber into which the first stock is injected, the reactor chamber being defined between an outer surface of a cylindrical body and an inner surface of a cylindrical bore, wherein the cylindrical body is a circular cylinder and the cylindrical bore is a circular cylinder;
- and
- b. collecting the graphenic compound from an outlet of the continuous reactor, the graphenic compound being collected downstream from the first inlet, and wherein the graphenic compound comprises:
- i) graphene, wherein at least 50% of the graphite is converted to graphene;
- ii) only graphene oxide collected after 1 minute comprising less than 1 wt. % graphite;
- or
- iii) reduced graphene oxide having a C/O atomic ratio of at least 10.
4 more elements
A process for manufacturing a graphenic compound the process comprising:
- a. injecting a first stock into a first inlet of a continuous or semi-continuous reactor, the first stock comprising graphite and optionally one or more additives comprising a surfactant and/or thickening agent, wherein the first stock comprises graphite in a concentration of about 0.1 wt. % to about 50 wt. %;
- and
- b. collecting the graphenic compound from an outlet of the continuous or semi-continuous reactor, the graphenic compound being collected downstream from the first inlet, and wherein the graphenic compound comprises:
- i) graphene, wherein at least 50% of the graphite is converted to graphene;
- ii) only graphene oxide collected after 1 minute comprising less than 1 wt. % graphite;
- or
- iii) reduced graphene oxide having a C/O atomic ratio of at least 10.
4 more elements
A process for manufacturing a graphenic compound the process comprising:
- a. injecting a first stock into a first inlet of a continuous or semi-continuous reactor, the first stock comprising graphite and optionally one or more additives comprising a surfactant and/or a thickening agent, wherein the first stock is aqueous;
- and
- b. collecting the graphenic compound from an outlet of the continuous or semi-continuous reactor, the graphenic compound being collected downstream from the first inlet, and wherein the graphenic compound comprises:
- i) graphene, wherein at least 50% of the graphite is converted to graphene;
- ii) only graphene oxide collected after 1 minute comprising less than 1 wt. % graphite;
- or
- iii) reduced graphene oxide having a C/O atomic ratio of at least 10.
4 more elements
A process for manufacturing a graphenic compound the process comprising:
- a. injecting a first stock into a first inlet of a continuous or semi-continuous reactor, the first stock comprising graphite and optionally one or more additives comprising a surfactant and/or thickening agent, and injecting one or more reagent into a second inlet of the continuous or semi-continuous reactor;
- and
- b. collecting the graphenic compound from an outlet of the continuous or semi-continuous reactor, the graphenic compound being collected downstream from the first inlet, and wherein the graphenic compound comprises:
- i) graphene, wherein at least 50% of the graphite is converted to graphene;
- ii) only graphene oxide collected after 1 minute comprising less than 1 wt. % graphite;
- or
- iii) reduced graphene oxide having a C/O atomic ratio of at least 10.
4 more elements
A process for manufacturing a graphenic compound the process comprising:
- a. injecting a first stock into a first inlet of a continuous or semi-continuous reactor, the first stock comprising graphite and optionally one or more additives comprising a surfactant and/or thickening agent, wherein the continuous or semi-continuous reactor is a toroidal or helical reactor configured to convert graphite into graphene with a conversion rate of at least 50%, or the continuous or semi-continuous reactor is a toroidal or helical reactor configured to produce a Couette flow or Taylor vortex flow to convert graphite to substantially uniform graphene oxide with substantially no graphite component observed in 1-10 minutes;
- and
- b. collecting the graphenic compound from an outlet of the continuous or semi-continuous reactor, the graphenic compound being collected downstream from the first inlet, and wherein the graphenic compound comprises:
- i) graphene, wherein at least 50% of the graphite is converted to graphene;
- ii) only graphene oxide collected after 1 minute comprising less than 1 wt. % graphite;
- or
- iii) reduced graphene oxide having a C/O atomic ratio of at least 10.
4 more elements
Dependencies are inferred from the claim text.