Patent
US 10,115,497COMPRESSIVE GRAPHENE HYDROGEL AND PREPARATION METHOD
Yuying ZHENG
US
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US 10,115,497Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1,. Canceled
A process of preparing a compressive gra ph ene hydrogel by using a hydrot henn al met h od, the process co rn prisin g: u sing oxidized gra phene as precursor; adding water into said oxidized graphene to mak e an aqueous solutio n; placing said aqueous solution in a reactor lining; doping said aqueous solution with phyti c acid, and carry in g out a reaction after mix urg; freeze-d ry ing t h e reaction product to get said compressive graph en e hydroge l, Original
The process of claim 2, wherein the g r ee o x e ox xdized gra phe u e in said aqueous so lu tion is at a concentration of ' 1- 4 m g/mL Currently amended
The process of claim 2, wherein the aqueous acid for every 6 0rnL of the a q ueous solu tion. solution after being doped has 1- I OmL of p hytic Original
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials1 process step
Graphite oxide prepared from natural flake graphite via oxidation with H₂SO₄/H₃PO₄ mixed acid and KMnO₄ at 50°C for 12h. Graphene oxide aqueous solution (1 mg/mL, 60 mL) placed in Teflon-lined autoclave with 4 mL phytic acid, reacted at 150°C for 12h. Cylindrical graphene hydrogel collected, washed with deionized water for 24h, then freeze-dried to obtain macroporous graphene hydrogel. Specific capacitance of 237.5 F/g measured at current density of 1 A/g.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (1 mg/mL, 60 mL) in Teflon-lined autoclave with 1 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (2 mg/mL, 60 mL) in Teflon-lined autoclave with 4 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (4 mg/mL, 60 mL) in Teflon-lined autoclave with 1 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (4 mg/mL, 60 mL) in Teflon-lined autoclave with 10 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1 (preparation details partially cut off in available text). Compressive graphene hydrogel prepared by hydrothermal method with phytic acid doping.
Materials described outside the worked examples.
graphite oxide
potassium permanganate
KMnO₄
sulfuric acid/phosphoric acid mixed acid
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific capacitance of graphene hydrogel electrode (Embodiment 1) | 237.5 F/g | compressive graphene hydrogel |
graphene oxide concentration in aqueous solution (claimed range) | — |
Patent
Atlas literature
Patent
US 10,115,497Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1,. Canceled
A process of preparing a compressive gra ph ene hydrogel by using a hydrot henn al met h od, the process co rn prisin g: u sing oxidized gra phene as precursor; adding water into said oxidized graphene to mak e an aqueous solutio n; placing said aqueous solution in a reactor lining; doping said aqueous solution with phyti c acid, and carry in g out a reaction after mix urg; freeze-d ry ing t h e reaction product to get said compressive graph en e hydroge l, Original
The process of claim 2, wherein the g r ee o x e ox xdized gra phe u e in said aqueous so lu tion is at a concentration of ' 1- 4 m g/mL Currently amended
The process of claim 2, wherein the aqueous acid for every 6 0rnL of the a q ueous solu tion. solution after being doped has 1- I OmL of p hytic Original
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials1 process step
Graphite oxide prepared from natural flake graphite via oxidation with H₂SO₄/H₃PO₄ mixed acid and KMnO₄ at 50°C for 12h. Graphene oxide aqueous solution (1 mg/mL, 60 mL) placed in Teflon-lined autoclave with 4 mL phytic acid, reacted at 150°C for 12h. Cylindrical graphene hydrogel collected, washed with deionized water for 24h, then freeze-dried to obtain macroporous graphene hydrogel. Specific capacitance of 237.5 F/g measured at current density of 1 A/g.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (1 mg/mL, 60 mL) in Teflon-lined autoclave with 1 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (2 mg/mL, 60 mL) in Teflon-lined autoclave with 4 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (4 mg/mL, 60 mL) in Teflon-lined autoclave with 1 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (4 mg/mL, 60 mL) in Teflon-lined autoclave with 10 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1 (preparation details partially cut off in available text). Compressive graphene hydrogel prepared by hydrothermal method with phytic acid doping.
Materials described outside the worked examples.
graphite oxide
potassium permanganate
KMnO₄
sulfuric acid/phosphoric acid mixed acid
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific capacitance of graphene hydrogel electrode (Embodiment 1) | 237.5 F/g | compressive graphene hydrogel |
graphene oxide concentration in aqueous solution (claimed range) | — |
Patent
Atlas literature
Patent
US 10,115,497Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1,. Canceled
A process of preparing a compressive gra ph ene hydrogel by using a hydrot henn al met h od, the process co rn prisin g: u sing oxidized gra phene as precursor; adding water into said oxidized graphene to mak e an aqueous solutio n; placing said aqueous solution in a reactor lining; doping said aqueous solution with phyti c acid, and carry in g out a reaction after mix urg; freeze-d ry ing t h e reaction product to get said compressive graph en e hydroge l, Original
The process of claim 2, wherein the g r ee o x e ox xdized gra phe u e in said aqueous so lu tion is at a concentration of ' 1- 4 m g/mL Currently amended
The process of claim 2, wherein the aqueous acid for every 6 0rnL of the a q ueous solu tion. solution after being doped has 1- I OmL of p hytic Original
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials1 process step
Graphite oxide prepared from natural flake graphite via oxidation with H₂SO₄/H₃PO₄ mixed acid and KMnO₄ at 50°C for 12h. Graphene oxide aqueous solution (1 mg/mL, 60 mL) placed in Teflon-lined autoclave with 4 mL phytic acid, reacted at 150°C for 12h. Cylindrical graphene hydrogel collected, washed with deionized water for 24h, then freeze-dried to obtain macroporous graphene hydrogel. Specific capacitance of 237.5 F/g measured at current density of 1 A/g.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (1 mg/mL, 60 mL) in Teflon-lined autoclave with 1 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (2 mg/mL, 60 mL) in Teflon-lined autoclave with 4 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (4 mg/mL, 60 mL) in Teflon-lined autoclave with 1 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (4 mg/mL, 60 mL) in Teflon-lined autoclave with 10 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1 (preparation details partially cut off in available text). Compressive graphene hydrogel prepared by hydrothermal method with phytic acid doping.
Materials described outside the worked examples.
graphite oxide
potassium permanganate
KMnO₄
sulfuric acid/phosphoric acid mixed acid
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific capacitance of graphene hydrogel electrode (Embodiment 1) | 237.5 F/g | compressive graphene hydrogel |
graphene oxide concentration in aqueous solution (claimed range) | — |
Patent
Atlas literature
Patent
US 10,115,497Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1,. Canceled
A process of preparing a compressive gra ph ene hydrogel by using a hydrot henn al met h od, the process co rn prisin g: u sing oxidized gra phene as precursor; adding water into said oxidized graphene to mak e an aqueous solutio n; placing said aqueous solution in a reactor lining; doping said aqueous solution with phyti c acid, and carry in g out a reaction after mix urg; freeze-d ry ing t h e reaction product to get said compressive graph en e hydroge l, Original
The process of claim 2, wherein the g r ee o x e ox xdized gra phe u e in said aqueous so lu tion is at a concentration of ' 1- 4 m g/mL Currently amended
The process of claim 2, wherein the aqueous acid for every 6 0rnL of the a q ueous solu tion. solution after being doped has 1- I OmL of p hytic Original
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials1 process step
Graphite oxide prepared from natural flake graphite via oxidation with H₂SO₄/H₃PO₄ mixed acid and KMnO₄ at 50°C for 12h. Graphene oxide aqueous solution (1 mg/mL, 60 mL) placed in Teflon-lined autoclave with 4 mL phytic acid, reacted at 150°C for 12h. Cylindrical graphene hydrogel collected, washed with deionized water for 24h, then freeze-dried to obtain macroporous graphene hydrogel. Specific capacitance of 237.5 F/g measured at current density of 1 A/g.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (1 mg/mL, 60 mL) in Teflon-lined autoclave with 1 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (2 mg/mL, 60 mL) in Teflon-lined autoclave with 4 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (4 mg/mL, 60 mL) in Teflon-lined autoclave with 1 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1. Graphene oxide aqueous solution (4 mg/mL, 60 mL) in Teflon-lined autoclave with 10 mL phytic acid, reacted at 150°C for 12h. Freeze-dried to obtain macroporous graphene hydrogel.
3 materials1 process step
Same graphite oxide preparation as Embodiment 1 (preparation details partially cut off in available text). Compressive graphene hydrogel prepared by hydrothermal method with phytic acid doping.
Materials described outside the worked examples.
graphite oxide
potassium permanganate
KMnO₄
sulfuric acid/phosphoric acid mixed acid
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
specific capacitance of graphene hydrogel electrode (Embodiment 1) | 237.5 F/g | compressive graphene hydrogel |
graphene oxide concentration in aqueous solution (claimed range) | — |
graphene oxide (oxidized graphene) |
phytic acid volume per 60 mL aqueous solution (claimed range) | — | phytic acid |
hydrothermal reaction temperature (described range) | — | compressive graphene hydrogel |
hydrothermal reaction time (described range) | — | compressive graphene hydrogel |
graphene oxide (oxidized graphene) |
phytic acid volume per 60 mL aqueous solution (claimed range) | — | phytic acid |
hydrothermal reaction temperature (described range) | — | compressive graphene hydrogel |
hydrothermal reaction time (described range) | — | compressive graphene hydrogel |
graphene oxide (oxidized graphene) |
phytic acid volume per 60 mL aqueous solution (claimed range) | — | phytic acid |
hydrothermal reaction temperature (described range) | — | compressive graphene hydrogel |
hydrothermal reaction time (described range) | — | compressive graphene hydrogel |
graphene oxide (oxidized graphene) |
phytic acid volume per 60 mL aqueous solution (claimed range) | — | phytic acid |
hydrothermal reaction temperature (described range) | — | compressive graphene hydrogel |
hydrothermal reaction time (described range) | — | compressive graphene hydrogel |