Patent
US 10,703,634METHOD FOR PREPARING GRAPHENE FROM COAL
Yuhong ZHANG
US
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Patent
Atlas literature
Patent
US 10,703,634Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 4 (b) shows that sp2 carbon is dominant with low proportion of oxygen-containing functional groups. Further XPS element analysis results show that the …
FIG. 9 shows the electrochemical performances of the porous graphene in Example 1, which contains a galvanostatic charge-discharge curve operated at a voltage …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing graphene from coal as raw material, the method comprisin g: refinin g step: refining the coal block or coal particle to get fine powdered coal; activation step: immersing the fine powdered coal obtained by the refining step with activation agent solution with stirring for 10-36 h at room temperature and drying water to get a molten mixture of the powered coal and the activation agent solution; arbonization step: carbonizing the molten mixture obtained in the activation step in an inert gas or a mixture of hydrogen and inert atmosphere and naturally ooling to obtain a carbonized product; and washin g and drying step: successively acid washing, water- washing and drying the carbonized product to obtain porous graphene. Currently amended
The method for preparing graphene according to claim 1, wherein the activation agent solution is an alkali metal hydroxide, alkaline earth metal hydroxides or mixtures thereof.. Currently amended
The method for preparing graphene according to claim 1, wherein the mass ratio of the coal to the activation agent is 1:0.1 to 1:10. Original
The method for preparing graphene according to claim 1, wherein the volume fraction of H₂ in the mixed atmosphere of hydrogen and inert atmosphere is 0 to 100%. Original
The method for preparing graphene according to claim 1, wherein the carbonization temperature in the carbonization step is 500 0 C. to 1200 0 C. and the carbonization residence time is g reater than 0 to 10 h. Currently amended
The method for preparing graphene according to claim 1, wherein the rate of temperature rise in the carbonization step is g reater than 0.1 to 15 0 C./min. Original
The method for preparing graphene according to claim 1, wherein the concentration of the activation agent solution is g reater than 0 to 10 mol/L. Currently amended
The method for preparing graphene according to claim 1, wherein the washing step is carried out by using dilute hydrochloric acid or nitric acid, and the concentration of the washing solution is 0.5 mol/L to 2 mol/L. Original
The method for preparing graphene according to claim 1, wherein the drying temperature is 60 to 200 0 C. Original
The method for preparing graphene according to claim 1, wherein the inert atmosphere is nitrogen or argon. Original
The method for preparing graphene according to claim 1, wherein the coal has a fixed carbon content of ' 0 to 70%, a volatile content i s-of 20 to 50%, a moisture content -4 s of 0 to 30%, an ash content of 0 to 10%, a coal element analysis requires carbon content of 50 to 80%, hydrogen content of 0 to 10%, and oxygen content of 0 to 30%. Currently amended
A graphene material obtained by the method for preparing graphene according to claim 1, havin g a specific capacitance of from 90 to 180 F/q at a current density of 0.5 A/q when used as a supercapacitor electrode in an org anic system. Currently amended
The method for preparing graphene according to claim 1, wherein ammonia is used as an activation agent in the activation step. New
Layer stacks claimed or described, ordered top of device to substrate.
supercapacitor electrode (organic system)
Materials described outside the worked examples.
coal (Zhundong lignite)
porous graphene
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 (b) shows that sp2 carbon is dominant with low proportion of oxygen-containing functional groups. Further XPS element analysis results show that the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Specific Surface Area | 3345 m2/g | porous graphene |
Related documents with shared materials, methods, properties, or citations.
THREE-DIMENSIONAL GRAPHENE COMPOSITE, PREPARATION METHOD FOR THE SAME, AND SUPERCAPACITOR COMPRISING THE SAME
GRAPHENE-ENABLED SELENIUM CATHODE ACTIVE MATERIAL FOR AN ALKALI METAL-SELENIUM SECONDARY BATTERY
Patent
Atlas literature
Patent
US 10,703,634Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 4 (b) shows that sp2 carbon is dominant with low proportion of oxygen-containing functional groups. Further XPS element analysis results show that the …
FIG. 9 shows the electrochemical performances of the porous graphene in Example 1, which contains a galvanostatic charge-discharge curve operated at a voltage …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing graphene from coal as raw material, the method comprisin g: refinin g step: refining the coal block or coal particle to get fine powdered coal; activation step: immersing the fine powdered coal obtained by the refining step with activation agent solution with stirring for 10-36 h at room temperature and drying water to get a molten mixture of the powered coal and the activation agent solution; arbonization step: carbonizing the molten mixture obtained in the activation step in an inert gas or a mixture of hydrogen and inert atmosphere and naturally ooling to obtain a carbonized product; and washin g and drying step: successively acid washing, water- washing and drying the carbonized product to obtain porous graphene. Currently amended
The method for preparing graphene according to claim 1, wherein the activation agent solution is an alkali metal hydroxide, alkaline earth metal hydroxides or mixtures thereof.. Currently amended
The method for preparing graphene according to claim 1, wherein the mass ratio of the coal to the activation agent is 1:0.1 to 1:10. Original
The method for preparing graphene according to claim 1, wherein the volume fraction of H₂ in the mixed atmosphere of hydrogen and inert atmosphere is 0 to 100%. Original
The method for preparing graphene according to claim 1, wherein the carbonization temperature in the carbonization step is 500 0 C. to 1200 0 C. and the carbonization residence time is g reater than 0 to 10 h. Currently amended
The method for preparing graphene according to claim 1, wherein the rate of temperature rise in the carbonization step is g reater than 0.1 to 15 0 C./min. Original
The method for preparing graphene according to claim 1, wherein the concentration of the activation agent solution is g reater than 0 to 10 mol/L. Currently amended
The method for preparing graphene according to claim 1, wherein the washing step is carried out by using dilute hydrochloric acid or nitric acid, and the concentration of the washing solution is 0.5 mol/L to 2 mol/L. Original
The method for preparing graphene according to claim 1, wherein the drying temperature is 60 to 200 0 C. Original
The method for preparing graphene according to claim 1, wherein the inert atmosphere is nitrogen or argon. Original
The method for preparing graphene according to claim 1, wherein the coal has a fixed carbon content of ' 0 to 70%, a volatile content i s-of 20 to 50%, a moisture content -4 s of 0 to 30%, an ash content of 0 to 10%, a coal element analysis requires carbon content of 50 to 80%, hydrogen content of 0 to 10%, and oxygen content of 0 to 30%. Currently amended
A graphene material obtained by the method for preparing graphene according to claim 1, havin g a specific capacitance of from 90 to 180 F/q at a current density of 0.5 A/q when used as a supercapacitor electrode in an org anic system. Currently amended
The method for preparing graphene according to claim 1, wherein ammonia is used as an activation agent in the activation step. New
Layer stacks claimed or described, ordered top of device to substrate.
supercapacitor electrode (organic system)
Materials described outside the worked examples.
coal (Zhundong lignite)
porous graphene
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 (b) shows that sp2 carbon is dominant with low proportion of oxygen-containing functional groups. Further XPS element analysis results show that the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Specific Surface Area | 3345 m2/g | porous graphene |
Related documents with shared materials, methods, properties, or citations.
THREE-DIMENSIONAL GRAPHENE COMPOSITE, PREPARATION METHOD FOR THE SAME, AND SUPERCAPACITOR COMPRISING THE SAME
GRAPHENE-ENABLED SELENIUM CATHODE ACTIVE MATERIAL FOR AN ALKALI METAL-SELENIUM SECONDARY BATTERY
Patent
Atlas literature
Patent
US 10,703,634Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 4 (b) shows that sp2 carbon is dominant with low proportion of oxygen-containing functional groups. Further XPS element analysis results show that the …
FIG. 9 shows the electrochemical performances of the porous graphene in Example 1, which contains a galvanostatic charge-discharge curve operated at a voltage …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing graphene from coal as raw material, the method comprisin g: refinin g step: refining the coal block or coal particle to get fine powdered coal; activation step: immersing the fine powdered coal obtained by the refining step with activation agent solution with stirring for 10-36 h at room temperature and drying water to get a molten mixture of the powered coal and the activation agent solution; arbonization step: carbonizing the molten mixture obtained in the activation step in an inert gas or a mixture of hydrogen and inert atmosphere and naturally ooling to obtain a carbonized product; and washin g and drying step: successively acid washing, water- washing and drying the carbonized product to obtain porous graphene. Currently amended
The method for preparing graphene according to claim 1, wherein the activation agent solution is an alkali metal hydroxide, alkaline earth metal hydroxides or mixtures thereof.. Currently amended
The method for preparing graphene according to claim 1, wherein the mass ratio of the coal to the activation agent is 1:0.1 to 1:10. Original
The method for preparing graphene according to claim 1, wherein the volume fraction of H₂ in the mixed atmosphere of hydrogen and inert atmosphere is 0 to 100%. Original
The method for preparing graphene according to claim 1, wherein the carbonization temperature in the carbonization step is 500 0 C. to 1200 0 C. and the carbonization residence time is g reater than 0 to 10 h. Currently amended
The method for preparing graphene according to claim 1, wherein the rate of temperature rise in the carbonization step is g reater than 0.1 to 15 0 C./min. Original
The method for preparing graphene according to claim 1, wherein the concentration of the activation agent solution is g reater than 0 to 10 mol/L. Currently amended
The method for preparing graphene according to claim 1, wherein the washing step is carried out by using dilute hydrochloric acid or nitric acid, and the concentration of the washing solution is 0.5 mol/L to 2 mol/L. Original
The method for preparing graphene according to claim 1, wherein the drying temperature is 60 to 200 0 C. Original
The method for preparing graphene according to claim 1, wherein the inert atmosphere is nitrogen or argon. Original
The method for preparing graphene according to claim 1, wherein the coal has a fixed carbon content of ' 0 to 70%, a volatile content i s-of 20 to 50%, a moisture content -4 s of 0 to 30%, an ash content of 0 to 10%, a coal element analysis requires carbon content of 50 to 80%, hydrogen content of 0 to 10%, and oxygen content of 0 to 30%. Currently amended
A graphene material obtained by the method for preparing graphene according to claim 1, havin g a specific capacitance of from 90 to 180 F/q at a current density of 0.5 A/q when used as a supercapacitor electrode in an org anic system. Currently amended
The method for preparing graphene according to claim 1, wherein ammonia is used as an activation agent in the activation step. New
Layer stacks claimed or described, ordered top of device to substrate.
supercapacitor electrode (organic system)
Materials described outside the worked examples.
coal (Zhundong lignite)
porous graphene
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 (b) shows that sp2 carbon is dominant with low proportion of oxygen-containing functional groups. Further XPS element analysis results show that the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Specific Surface Area | 3345 m2/g | porous graphene |
Related documents with shared materials, methods, properties, or citations.
THREE-DIMENSIONAL GRAPHENE COMPOSITE, PREPARATION METHOD FOR THE SAME, AND SUPERCAPACITOR COMPRISING THE SAME
GRAPHENE-ENABLED SELENIUM CATHODE ACTIVE MATERIAL FOR AN ALKALI METAL-SELENIUM SECONDARY BATTERY
Patent
Atlas literature
Patent
US 10,703,634Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 4 (b) shows that sp2 carbon is dominant with low proportion of oxygen-containing functional groups. Further XPS element analysis results show that the …
FIG. 9 shows the electrochemical performances of the porous graphene in Example 1, which contains a galvanostatic charge-discharge curve operated at a voltage …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for preparing graphene from coal as raw material, the method comprisin g: refinin g step: refining the coal block or coal particle to get fine powdered coal; activation step: immersing the fine powdered coal obtained by the refining step with activation agent solution with stirring for 10-36 h at room temperature and drying water to get a molten mixture of the powered coal and the activation agent solution; arbonization step: carbonizing the molten mixture obtained in the activation step in an inert gas or a mixture of hydrogen and inert atmosphere and naturally ooling to obtain a carbonized product; and washin g and drying step: successively acid washing, water- washing and drying the carbonized product to obtain porous graphene. Currently amended
The method for preparing graphene according to claim 1, wherein the activation agent solution is an alkali metal hydroxide, alkaline earth metal hydroxides or mixtures thereof.. Currently amended
The method for preparing graphene according to claim 1, wherein the mass ratio of the coal to the activation agent is 1:0.1 to 1:10. Original
The method for preparing graphene according to claim 1, wherein the volume fraction of H₂ in the mixed atmosphere of hydrogen and inert atmosphere is 0 to 100%. Original
The method for preparing graphene according to claim 1, wherein the carbonization temperature in the carbonization step is 500 0 C. to 1200 0 C. and the carbonization residence time is g reater than 0 to 10 h. Currently amended
The method for preparing graphene according to claim 1, wherein the rate of temperature rise in the carbonization step is g reater than 0.1 to 15 0 C./min. Original
The method for preparing graphene according to claim 1, wherein the concentration of the activation agent solution is g reater than 0 to 10 mol/L. Currently amended
The method for preparing graphene according to claim 1, wherein the washing step is carried out by using dilute hydrochloric acid or nitric acid, and the concentration of the washing solution is 0.5 mol/L to 2 mol/L. Original
The method for preparing graphene according to claim 1, wherein the drying temperature is 60 to 200 0 C. Original
The method for preparing graphene according to claim 1, wherein the inert atmosphere is nitrogen or argon. Original
The method for preparing graphene according to claim 1, wherein the coal has a fixed carbon content of ' 0 to 70%, a volatile content i s-of 20 to 50%, a moisture content -4 s of 0 to 30%, an ash content of 0 to 10%, a coal element analysis requires carbon content of 50 to 80%, hydrogen content of 0 to 10%, and oxygen content of 0 to 30%. Currently amended
A graphene material obtained by the method for preparing graphene according to claim 1, havin g a specific capacitance of from 90 to 180 F/q at a current density of 0.5 A/q when used as a supercapacitor electrode in an org anic system. Currently amended
The method for preparing graphene according to claim 1, wherein ammonia is used as an activation agent in the activation step. New
Layer stacks claimed or described, ordered top of device to substrate.
supercapacitor electrode (organic system)
Materials described outside the worked examples.
coal (Zhundong lignite)
porous graphene
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 (b) shows that sp2 carbon is dominant with low proportion of oxygen-containing functional groups. Further XPS element analysis results show that the …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Specific Surface Area | 3345 m2/g | porous graphene |
Related documents with shared materials, methods, properties, or citations.
THREE-DIMENSIONAL GRAPHENE COMPOSITE, PREPARATION METHOD FOR THE SAME, AND SUPERCAPACITOR COMPRISING THE SAME
GRAPHENE-ENABLED SELENIUM CATHODE ACTIVE MATERIAL FOR AN ALKALI METAL-SELENIUM SECONDARY BATTERY
alkali metal hydroxide or alkaline earth metal hydroxide activation agent
ammonia
NH₃
FIG. 9 shows the electrochemical performances of the porous graphene in Example 1, which contains a galvanostatic charge-discharge curve operated at a voltage …
| 90–180 F/g |
porous graphene |
Heteroatom Content | ≤ 3 wt% | porous graphene |
Temperature | 500–600 °C | — |
Voltage | 2.8–4.2 V | — |
alkali metal hydroxide or alkaline earth metal hydroxide activation agent
ammonia
NH₃
FIG. 9 shows the electrochemical performances of the porous graphene in Example 1, which contains a galvanostatic charge-discharge curve operated at a voltage …
| 90–180 F/g |
porous graphene |
Heteroatom Content | ≤ 3 wt% | porous graphene |
Temperature | 500–600 °C | — |
Voltage | 2.8–4.2 V | — |
alkali metal hydroxide or alkaline earth metal hydroxide activation agent
ammonia
NH₃
FIG. 9 shows the electrochemical performances of the porous graphene in Example 1, which contains a galvanostatic charge-discharge curve operated at a voltage …
| 90–180 F/g |
porous graphene |
Heteroatom Content | ≤ 3 wt% | porous graphene |
Temperature | 500–600 °C | — |
Voltage | 2.8–4.2 V | — |
alkali metal hydroxide or alkaline earth metal hydroxide activation agent
ammonia
NH₃
FIG. 9 shows the electrochemical performances of the porous graphene in Example 1, which contains a galvanostatic charge-discharge curve operated at a voltage …
| 90–180 F/g |
porous graphene |
Heteroatom Content | ≤ 3 wt% | porous graphene |
Temperature | 500–600 °C | — |
Voltage | 2.8–4.2 V | — |