METHODS OF FABRICATING LASER-INDUCED GRAPHENE AND COMPOSITIONS THEREOF

• Main Authors: ARNUSCH CHRISTOPHER JOHN, KINSTLINGER IAN, SINGH SWATANTRA PRATAP, YE RUQUAN, CHYAN YIEU, KITTRELL CARTER, COFER SAVANNAH, LI YILUN, MILLER JORDAN, TOUR JAMES M, LUONG DUY X
• Format: Patent
• Language: Chinese; English
• Published: 23.08.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SEPARATION; TRANSPORTING

The present invention provides methods that expand the properties of laser-induced graphene (LIG) and the resulting LIG having the expanded properties. The methods of fabricating laser-induced graphene from materials are provided, 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 LIGsurfaces 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 materialsfrom carbon precurors. App