Nano-scaled graphene platelets with a high length-to-width aspect ratio
Abstract
This invention provides a nano-scaled graphene platelet (NGP) having a thickness no greater than 100 nm and a length-to-width ratio no less than 3 (preferably greater than 10). The NGP with a high length-to-width ratio can be prepared by using a method comprising (a) intercalating a carbon fiber or graphite fiber with an intercalate to form an intercalated fiber; (b) exfoliating the intercalated fiber to obtain an exfoliated fiber comprising graphene sheets or flakes; and (c) separating the graphene sheets or flakes to obtain nano-scaled graphene platelets. The invention also provides a nanocomposite material comprising an NGP with a high length-to-width ratio. Such a nanocomposite can become electrically conductive with a small weight fraction of NGPs. Conductive composites are particularly useful for shielding of sensitive electronic equipment against electromagnetic interference (EMI) or radio frequency interference (RFI), and for electrostatic charge dissipation.
- Inventors:
-
- Centerville, OH
- Issue Date:
- Research Org.:
- Nanotek Instruments, Inc. (Dayton, OH)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1017171
- Patent Number(s):
- 7790285
- Application Number:
- 12/002,278
- Assignee:
- Nanotek Instruments, Inc. (Dayton, OH)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
- DOE Contract Number:
- SBIR
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Zhamu, Aruna, Guo, Jiusheng, and Jang, Bor Z. Nano-scaled graphene platelets with a high length-to-width aspect ratio. United States: N. p., 2010.
Web.
Zhamu, Aruna, Guo, Jiusheng, & Jang, Bor Z. Nano-scaled graphene platelets with a high length-to-width aspect ratio. United States.
Zhamu, Aruna, Guo, Jiusheng, and Jang, Bor Z. Tue .
"Nano-scaled graphene platelets with a high length-to-width aspect ratio". United States. https://www.osti.gov/servlets/purl/1017171.
@article{osti_1017171,
title = {Nano-scaled graphene platelets with a high length-to-width aspect ratio},
author = {Zhamu, Aruna and Guo, Jiusheng and Jang, Bor Z},
abstractNote = {This invention provides a nano-scaled graphene platelet (NGP) having a thickness no greater than 100 nm and a length-to-width ratio no less than 3 (preferably greater than 10). The NGP with a high length-to-width ratio can be prepared by using a method comprising (a) intercalating a carbon fiber or graphite fiber with an intercalate to form an intercalated fiber; (b) exfoliating the intercalated fiber to obtain an exfoliated fiber comprising graphene sheets or flakes; and (c) separating the graphene sheets or flakes to obtain nano-scaled graphene platelets. The invention also provides a nanocomposite material comprising an NGP with a high length-to-width ratio. Such a nanocomposite can become electrically conductive with a small weight fraction of NGPs. Conductive composites are particularly useful for shielding of sensitive electronic equipment against electromagnetic interference (EMI) or radio frequency interference (RFI), and for electrostatic charge dissipation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {9}
}
Works referenced in this record:
Energy gaps in zero-dimensional graphene nanoribbons
journal, July 2007
- Shemella, Philip; Zhang, Yiming; Mailman, Mitch
- Applied Physics Letters, Vol. 91, Issue 4