Electrochemical method of producing nano-scaled graphene platelets
Abstract
A method of producing nano-scaled graphene platelets with an average thickness smaller than 30 nm from a layered graphite material. The method comprises (a) forming a carboxylic acid-intercalated graphite compound by an electrochemical reaction; (b) exposing the intercalated graphite compound to a thermal shock to produce exfoliated graphite; and (c) subjecting the exfoliated graphite to a mechanical shearing treatment to produce the nano-scaled graphene platelets. Preferred carboxylic acids are formic acid and acetic acid. The exfoliation step in the instant invention does not involve the evolution of undesirable species, such as NO.sub.x and SO.sub.x, which are common by-products of exfoliating conventional sulfuric or nitric acid-intercalated graphite compounds. The nano-scaled platelets are candidate reinforcement fillers for polymer nanocomposites. Nano-scaled graphene platelets are much lower-cost alternatives to carbon nano-tubes or carbon nano-fibers.
- Inventors:
- Issue Date:
- Research Org.:
- Nanotek Instruments, Inc. (Dayton, OH)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1092763
- Patent Number(s):
- 8524067
- Application Number:
- 11/881,388
- Assignee:
- Nanotek Instruments, Inc. (Dayton, OH)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Zhamu, Aruna, Jang, Joan, and Jang, Bor Z. Electrochemical method of producing nano-scaled graphene platelets. United States: N. p., 2013.
Web.
Zhamu, Aruna, Jang, Joan, & Jang, Bor Z. Electrochemical method of producing nano-scaled graphene platelets. United States.
Zhamu, Aruna, Jang, Joan, and Jang, Bor Z. Tue .
"Electrochemical method of producing nano-scaled graphene platelets". United States. https://www.osti.gov/servlets/purl/1092763.
@article{osti_1092763,
title = {Electrochemical method of producing nano-scaled graphene platelets},
author = {Zhamu, Aruna and Jang, Joan and Jang, Bor Z.},
abstractNote = {A method of producing nano-scaled graphene platelets with an average thickness smaller than 30 nm from a layered graphite material. The method comprises (a) forming a carboxylic acid-intercalated graphite compound by an electrochemical reaction; (b) exposing the intercalated graphite compound to a thermal shock to produce exfoliated graphite; and (c) subjecting the exfoliated graphite to a mechanical shearing treatment to produce the nano-scaled graphene platelets. Preferred carboxylic acids are formic acid and acetic acid. The exfoliation step in the instant invention does not involve the evolution of undesirable species, such as NO.sub.x and SO.sub.x, which are common by-products of exfoliating conventional sulfuric or nitric acid-intercalated graphite compounds. The nano-scaled platelets are candidate reinforcement fillers for polymer nanocomposites. Nano-scaled graphene platelets are much lower-cost alternatives to carbon nano-tubes or carbon nano-fibers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {9}
}