Patterned graphite oxide films and methods to make and use same

Patent metadata

Field	Value
Publication number	US-9312078-B2
Application number	US-201114006086-A
Country	US
Kind code	B2
Filing date	Mar 18, 2011
Priority date	Mar 18, 2011
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

The present invention relates to patterned graphite oxide films and methods to make and use same. The present invention includes a novel strategy developed to imprint any required conductive patterns onto self-assembled graphene oxide (GO) membranes.

First claim

What is claimed is:

1. A method comprising the steps of:
(a) selecting a graphite oxide membrane, wherein the graphite oxide membrane is a freestanding graphite oxide membrane;
(b) forming a pattern on the graphite oxide membrane to form a patterned graphite oxide membrane, wherein the pattern is formed by reducing a portion of the graphite-oxide membrane to conducting reduced graphite oxide; and
(c) forming a device that comprises the patterned graphite oxide membrane, wherein the step of forming the device comprises:
cutting a pattern from tape, wherein the pattern of the tape is the same as the pattern of the patterned graphite oxide membrane, and
operably affixing the tape to the patterned graphite oxide membrane, wherein the tape acts as a current collector.

2. The method of claim 1 , wherein a laser is used to reduce the graphite-oxide membrane to conducting reduced graphite oxide.

3. The method of claim 2 , wherein the laser is a CO 2 laser.

4. The method of claim 1 , wherein the graphite-oxide membrane is reduced to conducting reduced graphite oxide using a technique selected from the group consisting of laser heating, controllable UV-irradiation, hot AFM tip scanning, and combinations thereof.

5. The method of claim 1 , wherein the patterned graphite oxide membrane is a reduced graphite oxide-graphite oxide-reduced graphite oxide graphite patterned oxide inembrane.

6. The method of claim 1 , wherein the patterned graphite oxide membrane has an in-plane geometry.

7. The method of claim 6 , wherein the in-plane geometry is selected from the group consisting of column, concentric circle, and hairbrush geometries and combinations thereof.

8. The method of claim 1 , wherein the patterned graphite oxide membrane has a sandwich geometry.

9. The method of claim 1 , wherein the tape is selected from the group consisting of copper tape, polyvinyl tape, carbon-coated aluminum tape, and combinations thereof.

10. The method of claim 1 , wherein the tape is a current collector tape.

11. The method of claim 1 , wherein the tape is an electrical contact tape.

12. The method of claim 1 , wherein the graphite oxide is prepared using a modified Hummers method.

13. The method of claim 1 , wherein the device is operable for electrochemical performance without the use of any external electrolyte.

14. The method of claim 1 , wherein the device is a supercapacitor device.

15. The method of claim 1 , wherein the device is operable in a separator/electrolyte membrane system.

16. The method of claim 1 , wherein the method is scalable.

17. The method of claim 16 , wherein the method is scalable to write micro-supercapacitors on the graphite oxide.

18. The method of claim 1 , wherein the method makes a two-dimensional pattern with a one-step laser-printing technique.

19. The method of claim 1 , wherein the device is operable in an application selected from the group consisting of energy storage, energy storage capacitor, electronics, water purification, and combinations thereof.

20. The method of claim 1 , further comprising the step of using the device in an application selected from the group consisting of an energy storage device, an energy storage capacitor, electronics, water purification, and combinations thereof.

21. A device comprising a patterned graphite oxide membrane, wherein the pattern on the patterned graphite oxide membrane is conducting reduced graphite oxide; and
a patterned tape, wherein the patterned tape is the same pattern of the patterned graphite oxide membrane;
wherein the tape is operably affixed to the patterned graphite oxide membrane; and
wherein the tape acts as a current collector.

22. The device of claim 21 , wherein the patterned graphite oxide membrane is a reduced graphite oxide - graphite oxide - reduced graphite oxide patterned graphite oxide membrane.

23. The device of claim 21 , wherein the patterned graphite oxide membrane has an in-plane geometry.

24. The device of claim 23 , wherein the in-plane geometry is selected from the group consisting of column, concentric circle, and hairbrush geometries and combinations thereof.

25. The device of claim 21 , wherein the patterned graphite oxide membrane has a sandwich geometry.

26. The device of claim 21 , wherein the tape is selected from the group consisting of copper tape, polyvinyl tape, carbon-coated aluminum tape, and combinations thereof.

27. The device of claim 21 , wherein the tape is a current collector tape.

28. The device of claim 21 , wherein the tape is an electrical contact tape.

29. The device of claim 21 , wherein the device is operable for electrochemical performance without the use of any external electrolyte.

30. The device of claim 21 , wherein the device is a supercapacitor device.

31. The device of claim 30 , wherein the device is a micro-supercapacitor device.

32. The device of claim 21 , wherein the device is operable in a separator/electrolyte membrane system.

33. The device of claim 21 , wherein the device is operable in an application selected from the group consisting of energy storage, energy storage capacitor, electronics, water purification, and combinations thereof.

34. The device of claim 21 , wherein the device is selected from the group consisting of energy storage devices, energy storage capacitor devices, electronic devices, water purification devices, and combinations thereof.

35. The device of claim 21 formed from the method of claim 1 .

36. A method of using the device of claim 21 in an application selected from the group consisting of energy storage, energy storage capacitor, electronics, water purification, and combinations thereof.

Assignees

• Ajayan Pulickel M
• Pradhan Bhabendra K
• Gao Wei
• Univ Rice William M
• Nanoholdings Llc

Inventors

• Ajayan Pulickel M
• Pradhan Bhabendra K
• Gao Wei

Classifications

• Y10T156/10

  Methods of surface bonding and/or assembly therefor · CPC title

• B01D67/009 Primary

  with wave-energy, particle-radiation or plasma · CPC title

• C01B31/043

  Chemistry & Metallurgy · mapped topic

• H01G4/33

  Thin- or thick-film capacitors {(thin- or thick-film circuits; capacitors without a potential-jump or surface barrier specially adapted for integrated circuits, details thereof, multistep manufacturing processes therefor)} · CPC title

• B01D67/0093

  Chemical modification · CPC title