Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 15, Issue 9, Pages 974-978Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b413029d
Keywords
-
Ask authors/readers for more resources
Graphite nanoplatelets with thicknesses down to 2-10 nm are synthesized by alkali metal intercalation followed by ethanol exfoliation and microwave drying. Graphite that has already been intercalated and exfoliated with an oxidizing acid is reintercalated with an alkali metal to form a first stage compound, as confirmed by powder X-ray diffraction. This can be achieved either by heating graphite and potassium or caesium at 200 degreesC, or at room temperature using a sodium-potassium alloy. Reaction of the intercalated graphite with ethanol causes exfoliation of the graphene layers. Microwave radiation aids in drying and results in further separation of the sheets. Thermogravimetric analysis indicates that the graphite nanoplatelets are approximately 150 degreesC less stable in air than pristine graphite. High aspect ratio graphite nanoplatelets offer promise as reinforcements for high strength carbon-carbon composites.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available