Graphene - PowerPoint PPT Presentation

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Graphene

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As a new type of nanomaterials with the most thin, the maximum intensity and most conductive conductivity, graphene is known as "black gold" and "king of new materials". – PowerPoint PPT presentation

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Title: Graphene


1
Graphene
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2
Graphene is a honeycomb planar film formed by sp2
hybridization of carbon atoms. It is a
quasi-two-dimensional material with only one
atomic layer thickness, so it is also called
monatomic layer graphite.
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3
Graphene
Strength
Flexibility
Conductivity
Thermal
Optical
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4
Graphene
King of new materials
Black gold
5
Physical Properties
Strength and Flexibility
Tensile strength
1
125GPa
Young's modulus
3
42 N/m2
Elastic modulus
2
1.1TPa
Graphene with 1m2 withstand 4kg
4
100 times
6
Physical Properties
Conductive Thermal Conductivity
The carrier properties of graphene derivatives
has great potential for further development of
graphene-based electronic and energy devices
Unique Carrier Properties
Quality of the Dirac fermions
The Fermi wavelength in high-quality bulk
graphene can be tuned up to hundreds of
nanometres.
7
Chemical Properties
Oxidation
Graphene can react with active metals, or
oxidized in air.
Reducibility
It can be oxidized by oxidizing acid, by which
the graphene can be cut into small pieces.
Aromaticity
Graphene is aromatic and has aromatic properties.
Other Properties
Adsorpt and desorpt of various atoms and
molecules, with super-hydrophobic and
super-oleophilic
8
Chemical Properties
Stability The structure of graphene is very
stable, carbon-carbon bond is only 1.42. The
connection between the carbon atoms inside the
graphene is very flexible. When the external
force is applied to the graphene, the carbon
atoms are bent and deformed, so that the carbon
atoms need not be rearranged to accommodate the
external forces, thus maintaining the structural
stability. In addition, when the electrons in the
graphene move in the track, they do not scatter
due to lattice defects or the introduction of
foreign atoms. As the interatomic force is very
strong, at room temperature, even if the
surrounding carbon atoms crashed, the internal
interference of graphene is very small.
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9
Applications
Touch Panels
Light-Emitting Diodes
Smart Windows
Solar Cells
Phone
10
Applications
3
Environmentally friendly
2
Long life span
1
Fast charging
11
Information
1-201-478-8534 1-516-662-5404
info_at_alfa-chemistry.com
Fax
Tel.
Add.
Email
2200 Smithtown Avenue, Room 1 Ronkonkoma, NY
11779-7329 USA
1-516-927-0118
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