skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method of producing exfoliated graphite, flexible graphite, and nano-scaled graphene platelets

Abstract

The present invention provides a method of exfoliating a layered material (e.g., graphite and graphite oxide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm. The method comprises (a) dispersing particles of graphite, graphite oxide, or a non-graphite laminar compound in a liquid medium containing therein a surfactant or dispersing agent to obtain a stable suspension or slurry; and (b) exposing the suspension or slurry to ultrasonic waves at an energy level for a sufficient length of time to produce separated nano-scaled platelets. 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:
 [1];  [2];  [1];  [1]
  1. Centerville, OH
  2. Columbus, OH
Publication Date:
Research Org.:
Nanotek Instruments, Inc. (Dayton, OH)
Sponsoring Org.:
USDOE
OSTI Identifier:
1017459
Patent Number(s):
7,824,651
Application Number:
11/800,728
Assignee:
Nanotek Instruments, Inc. (Dayton, OH)
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Zhamu, Aruna, Shi, Jinjun, Guo, Jiusheng, and Jang, Bor Z. Method of producing exfoliated graphite, flexible graphite, and nano-scaled graphene platelets. United States: N. p., 2010. Web.
Zhamu, Aruna, Shi, Jinjun, Guo, Jiusheng, & Jang, Bor Z. Method of producing exfoliated graphite, flexible graphite, and nano-scaled graphene platelets. United States.
Zhamu, Aruna, Shi, Jinjun, Guo, Jiusheng, and Jang, Bor Z. Tue . "Method of producing exfoliated graphite, flexible graphite, and nano-scaled graphene platelets". United States. https://www.osti.gov/servlets/purl/1017459.
@article{osti_1017459,
title = {Method of producing exfoliated graphite, flexible graphite, and nano-scaled graphene platelets},
author = {Zhamu, Aruna and Shi, Jinjun and Guo, Jiusheng and Jang, Bor Z},
abstractNote = {The present invention provides a method of exfoliating a layered material (e.g., graphite and graphite oxide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm. The method comprises (a) dispersing particles of graphite, graphite oxide, or a non-graphite laminar compound in a liquid medium containing therein a surfactant or dispersing agent to obtain a stable suspension or slurry; and (b) exposing the suspension or slurry to ultrasonic waves at an energy level for a sufficient length of time to produce separated nano-scaled platelets. 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 = {2010},
month = {11}
}

Patent:

Save / Share:

Works referenced in this record:

A Chemical Route to Carbon Nanoscrolls
journal, February 2003


Preparation and characterization of graphite nanosheets from ultrasonic powdering technique
journal, January 2004


Liquid Phase Production of Graphene by Exfoliation of Graphite in Surfactant/Water Solutions
journal, March 2009

  • Lotya, Mustafa; Hernandez, Yenny; King, Paul J.
  • Journal of the American Chemical Society, Vol. 131, Issue 10
  • DOI: 10.1021/ja807449u

Graphite Nanoplatelet Reinforcement of Electrospun Polyacrylonitrile Nanofibers
journal, January 2005