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Fluorinated Graphene Nanoplatelets: GF-6 is first of a new line of halogenated graphene materials. Fluorinated graphene is a novel graphene derivative. The formation of covalent C-F bonds is accompanied by sp2 to sp3 structural transition of C-C bonds. This results in improved surface activity as well as processability of GNPs. Unlike graphene, GF-6 displays better dispersibility in polar solvents such as DMA, THF, etc. Depending on the F/C ratio, the material exhibits a range from metallic to semiconducting to insulating electronic behavior. GF-6 contains 6 at. % of fluorine and comprised of an average of 37 graphene layers. Our material can be utilized in various applications such as batteries, nanocomposites, epoxies, etc.

Fluorinated graphene is considered as one of important ultrathin solid lubricants or lubricant additive of lubricating oils, lubricating coatings and anti-wear composites because of its low friction coefficient and high durability.

Specifications:

Form: Dry powder

Color: Black

Composition: CF_0.06

Thickness: average 37 graphene layers ~ 12 nmr

Planar size: 1 μm - 5 μm

Specific Surface Area: 65m2/g

Microstructure of Fluorinated GNPs:

The microstructure of GF-6 has been investigated by the SEM and TEM Imaging. The flakes show wrinkled paper-like structure with a lateral size ranging from 1 μm to 5 μm. The average number of graphene layers obtained from TEM is about 37 layers that is in agreement with flake thickness calculated from surface area measured by Brunauer-Emmett-Teller (BET) technique.

SEM image showing GF-6 on Lacey carbon support.

Bright-field TEM image showing GF-6 obtained at 100 keV.

X-ray Photoelectron Spectroscopy (XPS):

In order to analyze the chemical modification of graphene by fluorine, the X-ray Photoelectron Spectroscopy (XPS) has been performed. As expected, in addition to C 1s and O 1s peaks a distinct F 1s peak is detected. A minor oxygen band is attributed to the physically absorbed oxygen on GF-6 surfaces. The content of fluorine in GF-6 is about 6%.

 

Survey XPS spectra of GF-6.