Methods of fabricating laser-induced graphene and compositions thereof

Patent metadata

Field	Value
Publication number	US-2022267153-A1
Application number	US-202117516430-A
Country	US
Kind code	A1
Filing date	Nov 1, 2021
Priority date	Nov 6, 2016
Publication date	Aug 25, 2022
Grant date	—

Abstract

Methods that expand the properties of laser-induced graphene (LIG) and the resulting LIG having the expanded properties. Methods of fabricating laser-induced graphene from materials, which range from natural, renewable precursors (such as cloth or paper) to high performance polymers (like Kevlar). With multiple lasing, however, highly conductive PEI-based LIG could be obtained using both multiple pass and defocus methods. The resulting laser-induced graphene can be used, inter alia, in electronic devices, as antifouling surfaces, in water treatment technology, in membranes, and in electronics on paper and food Such methods include fabrication of LIG in controlled atmospheres, such that, for example, superhydrophobic and superhydrophilic LIG surfaces can be obtained. Such methods further include fabricating laser-induced graphene by multiple lasing of carbon precursors. Such methods further include direct 3D printing of graphene materials from carbon precurors. Application of such LIG include oil/water separation, liquid or gas separations using polymer membranes, anti-icing, microsupercapacitors, supercapacitors, water splitting catalysts, sensors, and flexible electronics.

First claim

1 - 70 . (canceled)

71 . A method comprising irradiating a material comprising an aromatic polysulfone with a laser to form laser-induced graphene on the surface of the material comprising the aromatic polysulfone.

72 . The method of claim 71 , wherein the aromatic polysulfone is selected from a group consisting of polysulfone, polyethersulfone, and polyphenylsulfone.

73 . The method of claim 71 further comprising a step of separating the laser-induced graphene from the material.

74 - 76 . (canceled)

77 . A method of treating a surface prone to the formation of biofilm, wherein the method comprises
(a) applying a carbon precursor onto the surface to form a carbon precursor-coated surface; and (b) laser-irradiating the carbon precursors-coated surface to form graphene thereon

78 - 79 . (canceled)

80 . A method comprising utilizing laser-induced graphene in a process selected from a group consisting of (a) for coating the inside of a pipe, (b) for degradation of organic or inorganic pollutants, (c) for a component of membrane water treatment equipment, (d) component in a medical application and (d) combinations thereof.

81 . The method of claim 80 , wherein the process for degradation of organic or inorganic pollutants comprises oxidizing organic contaminents by applying electrical voltage to the laser-induced graphene.

82 . The method of claim 80 , wherein the component of the membrane water treatment equipment is selected from a group consisting of a membrane spacer operable for adsorption of pollutants, laser-induced graphene attached to a substrate, laser-induced graphene separated from a substrate, and laser-induced graphene attached to a membrane of the membrane water treatment equipment.

83 . The method of claim 80 , wherein the medical application is a blood dialysis application.

84 . The method of claim 83 , wherein the blood dialysis application utilizes a dialysis membrane that comprises the laser-induced graphene.

85 . A method of fabricating a membrane for a separation application, wherein the method comprises:
(a) selecting a membrane having a carbon precursor layer; and (b) generating laser-induced graphene on the carbon precursor layer of the membrane to form a laser-induced graphene-coated separation membrane.

86 . The method of claim 85 , wherein the separation application is selected from a group consisting of oil/water separation, liquid separations, gas separations, and liquid/gas separations.

87 . The method of claim 85 , wherein the membrane is a polymer membrane.

88 . The method of claim 85 , wherein the carbon precursor is an aromatic polysulfone.

89 . The method of claim 88 , wherein the aromatic polysulfone is selected from a group consisting of ef polysulfone, polyethersulfone, and polyphenylsulfone.

90 - 119 . (canceled)

Assignees

• Univ Rice William M
• B G Negev Technologies And Applications Ltd At Ben Gurion Univ

Inventors

• Tour James M
• Chyan Yieu
• Arnusch Christopher John
• Singh Swatantra Pratap
• Li Yilun
• Luong Duy X
• Kittrell Carter
• Ye Ruquan
• Miller Jordan
• Kinstlinger Ian
• Cofer Savannah

Classifications

• H01M4/583

  Carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title

• B01D67/006

  by elimination of segments of the precursor, e.g. nucleation-track membranes, lithography or laser methods · CPC title

• C01P2002/82

  by IR- or Raman-data · CPC title

• B01D2323/34

  Use of radiation · CPC title

• C01B32/182

  Graphene · CPC title