Patent
US 9,695,516Graphite Oxide and Graphene Preparation Method
Kung-Hwa WEI
US
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Patent
Atlas literature
Patent
US 9,695,516Patent 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.
A graphite oxide and graphene preparation method, comprising the following steps: providing a plasma electrolytic apparatus, wherein the plasma electrolytic apparatus includes an electrolyte, and a cathode of the plasma electrolytic apparatus is a graphite electrode; and providing a cathodic current to the graphite electrode so as to initiate a plasma electrolytic process at a surface of the graphite electrode in contact with the electrolyte, to obtain a graphite oxide and a graphene, wherein an output voltage of the plasma electrolytic apparatus ranges from 40 V to 80 V, and an output current of the plasma electrolytic apparatus ranges from 0.5 A to 1.75 A.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the relative atomic pereentageratio- sumof the C=C and C-C bonds of the graphene is more than the relative atomicpereentage-ratio- sum of the C-O bonds.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the output current of the plasma electrolytic apparatus ranges from 0.5 A to 1.75 A.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the output voltage of the plasma electrolytic apparatus ranges from 40 V to 60 V.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein one end of the graphite electrode is higher than the electrolyte.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the plasma electrolytic process occurs at or near the surface of the graphite electrode.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein an area of an anode of the plasma electrolytic apparatus which is immersed in the electrolyte is Page 2 of 6 Application No. 14/319,397 Attorney Docket No. 5207/3484PUSI Reply to Final Office Action of 13 Jan 2017 11 times larger than an area of the cathode of the plasma electrolytic apparatus which is immersed in the electrolyte.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the anode of the plasma electrolytic apparatus is made of conductive materials containing no aluminum, magnesium or titanium.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein an anode of the plasma electrolytic apparatus is immersed into the electrolyte completely.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the electrolyte comprises hy d roxyl and ammonium ions.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the pH of the electrolyte ranges from 11 to 14. Page 3 of 6
Layer stacks claimed or described, ordered top of device to substrate.
plasma electrolytic apparatus
Materials described outside the worked examples.
graphite oxide
graphene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Voltage | 40–80 V | — |
Voltage |
Patent
Atlas literature
Patent
US 9,695,516Patent 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.
A graphite oxide and graphene preparation method, comprising the following steps: providing a plasma electrolytic apparatus, wherein the plasma electrolytic apparatus includes an electrolyte, and a cathode of the plasma electrolytic apparatus is a graphite electrode; and providing a cathodic current to the graphite electrode so as to initiate a plasma electrolytic process at a surface of the graphite electrode in contact with the electrolyte, to obtain a graphite oxide and a graphene, wherein an output voltage of the plasma electrolytic apparatus ranges from 40 V to 80 V, and an output current of the plasma electrolytic apparatus ranges from 0.5 A to 1.75 A.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the relative atomic pereentageratio- sumof the C=C and C-C bonds of the graphene is more than the relative atomicpereentage-ratio- sum of the C-O bonds.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the output current of the plasma electrolytic apparatus ranges from 0.5 A to 1.75 A.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the output voltage of the plasma electrolytic apparatus ranges from 40 V to 60 V.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein one end of the graphite electrode is higher than the electrolyte.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the plasma electrolytic process occurs at or near the surface of the graphite electrode.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein an area of an anode of the plasma electrolytic apparatus which is immersed in the electrolyte is Page 2 of 6 Application No. 14/319,397 Attorney Docket No. 5207/3484PUSI Reply to Final Office Action of 13 Jan 2017 11 times larger than an area of the cathode of the plasma electrolytic apparatus which is immersed in the electrolyte.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the anode of the plasma electrolytic apparatus is made of conductive materials containing no aluminum, magnesium or titanium.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein an anode of the plasma electrolytic apparatus is immersed into the electrolyte completely.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the electrolyte comprises hy d roxyl and ammonium ions.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the pH of the electrolyte ranges from 11 to 14. Page 3 of 6
Layer stacks claimed or described, ordered top of device to substrate.
plasma electrolytic apparatus
Materials described outside the worked examples.
graphite oxide
graphene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Voltage | 40–80 V | — |
Voltage |
Patent
Atlas literature
Patent
US 9,695,516Patent 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.
A graphite oxide and graphene preparation method, comprising the following steps: providing a plasma electrolytic apparatus, wherein the plasma electrolytic apparatus includes an electrolyte, and a cathode of the plasma electrolytic apparatus is a graphite electrode; and providing a cathodic current to the graphite electrode so as to initiate a plasma electrolytic process at a surface of the graphite electrode in contact with the electrolyte, to obtain a graphite oxide and a graphene, wherein an output voltage of the plasma electrolytic apparatus ranges from 40 V to 80 V, and an output current of the plasma electrolytic apparatus ranges from 0.5 A to 1.75 A.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the relative atomic pereentageratio- sumof the C=C and C-C bonds of the graphene is more than the relative atomicpereentage-ratio- sum of the C-O bonds.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the output current of the plasma electrolytic apparatus ranges from 0.5 A to 1.75 A.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the output voltage of the plasma electrolytic apparatus ranges from 40 V to 60 V.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein one end of the graphite electrode is higher than the electrolyte.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the plasma electrolytic process occurs at or near the surface of the graphite electrode.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein an area of an anode of the plasma electrolytic apparatus which is immersed in the electrolyte is Page 2 of 6 Application No. 14/319,397 Attorney Docket No. 5207/3484PUSI Reply to Final Office Action of 13 Jan 2017 11 times larger than an area of the cathode of the plasma electrolytic apparatus which is immersed in the electrolyte.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the anode of the plasma electrolytic apparatus is made of conductive materials containing no aluminum, magnesium or titanium.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein an anode of the plasma electrolytic apparatus is immersed into the electrolyte completely.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the electrolyte comprises hy d roxyl and ammonium ions.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the pH of the electrolyte ranges from 11 to 14. Page 3 of 6
Layer stacks claimed or described, ordered top of device to substrate.
plasma electrolytic apparatus
Materials described outside the worked examples.
graphite oxide
graphene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Voltage | 40–80 V | — |
Voltage |
Patent
Atlas literature
Patent
US 9,695,516Patent 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.
A graphite oxide and graphene preparation method, comprising the following steps: providing a plasma electrolytic apparatus, wherein the plasma electrolytic apparatus includes an electrolyte, and a cathode of the plasma electrolytic apparatus is a graphite electrode; and providing a cathodic current to the graphite electrode so as to initiate a plasma electrolytic process at a surface of the graphite electrode in contact with the electrolyte, to obtain a graphite oxide and a graphene, wherein an output voltage of the plasma electrolytic apparatus ranges from 40 V to 80 V, and an output current of the plasma electrolytic apparatus ranges from 0.5 A to 1.75 A.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the relative atomic pereentageratio- sumof the C=C and C-C bonds of the graphene is more than the relative atomicpereentage-ratio- sum of the C-O bonds.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the output current of the plasma electrolytic apparatus ranges from 0.5 A to 1.75 A.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the output voltage of the plasma electrolytic apparatus ranges from 40 V to 60 V.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein one end of the graphite electrode is higher than the electrolyte.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the plasma electrolytic process occurs at or near the surface of the graphite electrode.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein an area of an anode of the plasma electrolytic apparatus which is immersed in the electrolyte is Page 2 of 6 Application No. 14/319,397 Attorney Docket No. 5207/3484PUSI Reply to Final Office Action of 13 Jan 2017 11 times larger than an area of the cathode of the plasma electrolytic apparatus which is immersed in the electrolyte.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the anode of the plasma electrolytic apparatus is made of conductive materials containing no aluminum, magnesium or titanium.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein an anode of the plasma electrolytic apparatus is immersed into the electrolyte completely.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the electrolyte comprises hy d roxyl and ammonium ions.
The graphite oxide and graphene preparation method as claimed in claim 1, wherein the pH of the electrolyte ranges from 11 to 14. Page 3 of 6
Layer stacks claimed or described, ordered top of device to substrate.
plasma electrolytic apparatus
Materials described outside the worked examples.
graphite oxide
graphene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Voltage | 40–80 V | — |
Voltage |
graphite electrode
alkaline electrolyte with hydroxyl and ammonium ions
ammonium sulfate
(NH₄)2SO₄
ammonium nitrate
NH₄NO₃
ammonium chloride
NH₄Cl
| — |
Thickness | 10–30 nm | — |
Voltage | 20–80 V | — |
graphite electrode
alkaline electrolyte with hydroxyl and ammonium ions
ammonium sulfate
(NH₄)2SO₄
ammonium nitrate
NH₄NO₃
ammonium chloride
NH₄Cl
| — |
Thickness | 10–30 nm | — |
Voltage | 20–80 V | — |
graphite electrode
alkaline electrolyte with hydroxyl and ammonium ions
ammonium sulfate
(NH₄)2SO₄
ammonium nitrate
NH₄NO₃
ammonium chloride
NH₄Cl
| — |
Thickness | 10–30 nm | — |
Voltage | 20–80 V | — |
graphite electrode
alkaline electrolyte with hydroxyl and ammonium ions
ammonium sulfate
(NH₄)2SO₄
ammonium nitrate
NH₄NO₃
ammonium chloride
NH₄Cl
| — |
Thickness | 10–30 nm | — |
Voltage | 20–80 V | — |