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Single Layer Graphene

Single Layer Graphene

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Dispersible Single layer Graphene with high surface area (Powder and Dispersion)

Product Detail

CAS No.: 7782-42-5

1. Preparation Method

Powder: Thermal exfoliation reduction + Hydrogen reduction

Dispersion: Mechanical stripping and dispersion Method

2. Characterizations

Table 1 ACS Material Single Layer Graphene Powder

Single Layer Graphene Powder

Flake Diameter (μm)

0.4-5

Thickness (nm)

0.6-1.2

BET surface area (m2/g):

400 ~1000

Electrical resistivity (Ω·cm):

≤ 0.30

Density

~0.01 g/cm3

Dispersible property:

Can be re-dispersed in most solvents with the help of sonication


Table 2 ACS Material Single Layer Graphene Dispersion (~~New~~)

Single Layer Graphene Dispersion

Concentration (mg/ml)

1

Flake Diameter (μm)

0.4-5.0

Thickness (nm)

0.6-1.2

Water (wt%)

99.9

Dispersant (wt%)

0.1

Notes: Please ultrasonicate the single layer graphene dispersion before use.

Dispersible Single Layer Graphene is prepared by completely reducing graphene oxide‚ which is prepared by the modified Hummer’s method. The commonly used prepare method creates a denser graphene which is subject to aggregations. The resulting graphene agglomerates are not soluble or redispersable in water or other polar solvents‚ and this makes further processing difficult. Our Dispersible Graphene avoids this problem and can be redispersed in many solvents.

ACS Material can also provide Fluorinated Graphene. Read More>>

SEM image of ACS Material's Single Layer Graphene

TEM image of ACS Material's Single Layer Graphene (1)

TEM image of ACS Material's Single Layer Graphene (2)

 

3. Application Fields

This product is a monolayer graphene-based oily battery slurry with high electrical conductivity made by ultrasonic dispersible Single Layer Graphene. It is metal ion free and can be widely applied in battery slurry as conductive agent to improve the high rate charge-discharge capacity.

1)       Lithium ion and nickel-hydrogen battery - as high conductive components in battery slurry

2)       Supercapacitors - conductive reagents of the supercapacitor electrodes

3)       Catalyst

4)       Lead acid cell, Solar energy, Solar Cell

5)       Graphene semiconductor chips and semiconductor industry

6)       Conductive graphene film

7)       Graphene computer memory

8)       Biomaterials

9)       Transparent conductive coatings

 

Disclaimer: ACS Material, LLC believes that the information in this Technical Data Sheet is accurate and represents the best and most current information available to us. ACS Material makes no representations or warranties either express or implied, regarding the suitability of the material for any purpose or the accuracy of the information contained within this document. Accordingly, ACS Material will not be responsible for damages resulting from use of or reliance upon this information.

FAQ

How to disperse the Single Layer Graphene into Aqueous Systems?

The SLG product produced by ACS Material has no functional groups on the surface‚ and it can be dispersed in water or ethanol with a dispersion aid. These two dispersion aids have been proven to be useful:

1) Sodium dodecylbenzene sulfonate (SDBS)
2) Sodium dodecyl sulfate (SDS)

Add dispersant to water‚ and then add single layer graphene with the use of an ultrasonic mixer. The addition rate of single layer graphene should be carefully controlled until the desired concentration is achieved. Experiments are needed to determine the appropriate quantity of dispersant in your system‚ but in our experience with water‚ 10mg/ml dispersant is preferred. The sonication time should be 15+ minutes. If you notice some settling‚ assuming you have not attempted to over-concentrate the dispersion‚ the graphene can be redispersed with the aid of sonication. The maximum concentration of single layer graphene in water is about 0.1 mg/ml with SDBS as dispersant‚ or 100mg/l.

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