Single Layer Graphene
Dispersible Single layer Graphene with high surface area (Powder and Dispersion)
Product Detail
CAS No.: 7782-42-5
Single-layer graphene has emerged as a highly capable material that has the ability to replace outdated technologies and benefit countless industries. Incredibly lightweight yet highly durable, graphene is able to conduct a high level of electricity through a minuscule amount of material. Applications of graphene include small electrical circuits and outlets, medical equipment, solar cells, and more. Due to its flexible nature, many industry leaders have begun using graphene as a way to ensure the safety of their various equipment while not risking its efficiency. Single-layer graphene has proven to be an incredibly reliable resource that is both cost-efficient and energy-efficient.
Single layer graphene from ACS Material is available in powder or dispersion forms. The single layer graphene powder is created using a combination of thermal exfoliation reduction and hydrogen reduction. The single layer graphene dispersion is created via our own mechanical stripping and dispersion method. Both products are metal ion free and can be used as conductive agents to improve the high rate charge-discharge capacity of batteries. In addition to batteries, single layer graphene powders and dispersions are used in supercapacitors, lead-acid cells, solar cells, semiconductor chips, graphene films, coatings, as well as in many biomaterials.
Preparation Method
Powder: Thermal exfoliation reduction + Hydrogen reduction
Dispersion: Mechanical stripping and dispersion Method
Characterizations
Table 1 ACS Material Single Layer Graphene Powder
Single Layer Graphene Powder/ Monolayer 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 in DI Water (~~New~~)
Single Layer Graphene Dispersion in DI Water |
|
Concentration (mg/ml) |
1 |
Flake Diameter (μm) |
0.4-5.0 |
Thickness (nm) |
0.6-1.2 |
DI 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)
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
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ACS Material supplies exceptional advanced research materials to leading laboratories around the world. Our products have earned a reputation for high quality and consistency, and our customer service team is valued for their exceptional assistance before, during, and after an order is placed. Contact us today to find out more about how our products can help you move your research forward.
FAQ
1. How to disperse the Single Layer Graphene Powder 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.
2. Are there other elements in Single Layer Graphene?
Single Layer Graphene contains a bit of sulfur. Sulfuric acid is necessary for intercalation during the initial treatment and sulfur cannot be completely removed in the final product.
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