Graphene Ethanol Dispersion, Purity: 99.5%, Graphene: 2 wt%

Technical Specification:

1. Material Composition:
   • Graphene Content: 2.0 wt%.
     • Contains 2% graphene by weight in the ethanol dispersion.
   • Purity: 99.5% graphene.
     • High-purity graphene ensures minimal impurities, enhancing electrical and mechanical properties.
   • Dispersion Medium: Ethanol.
     • A low-viscosity, volatile, and eco-friendly solvent.
2. Physical Properties:
   • Appearance: Black liquid.
   • Graphene Flake Size: Typically <1 µm, consisting of single-layer or few-layer graphene sheets.
   • Viscosity: Moderate due to the higher graphene concentration, still suitable for spray and dip-coating applications.
   • Density: Approximately 0.79 g/cm³, characteristic of ethanol-based dispersions.
3. Electrical and Thermal Properties:
   • Electrical Conductivity:
     • High, benefiting from the increased graphene content.
   • Thermal Conductivity:
     • Excellent, enabling efficient heat dissipation for coatings and composites.
4. Chemical Stability:
   • Stable Dispersion:
     • Well-dispersed graphene in ethanol with minimal agglomeration under proper storage conditions.
5. Packaging:
   • Supplied in sealed, solvent-resistant containers, with available sizes ranging from 100 mL to 5 liters.

Applications:

1. Primary Applications:
   • Energy Storage:
     • Enhances electrode conductivity in lithium-ion batteries, supercapacitors, and fuel cells.
   • Conductive Coatings:
     • Produces highly uniform and conductive films for various substrates.
   • Advanced Composites:
     • Integrates into polymers to improve mechanical, electrical, and thermal properties.
2. Industries:
   • Electronics:
     • Used in flexible circuits, transparent conductive films, and sensors.
   • Automotive:
     • Applied in battery systems and lightweight conductive components.
   • Energy:
     • Enhances the performance of renewable energy storage systems and advanced batteries.
   • Aerospace:
     • Reinforces lightweight composite materials for structural and functional components.
3. Advantages for Applications:
   • Higher Graphene Concentration:
     • The 2 wt% dispersion provides improved performance for conductivity and material reinforcement compared to lower concentrations.
   • Eco-Friendly Solvent:
     • Ethanol is safer and less toxic compared to many alternatives, simplifying handling.
   • Processing Flexibility:
     • Suitable for spray, dip, spin-coating, and printing methods.
   • Stable and Uniform:
     • Ensures consistent graphene distribution for reliable results.
4. Specialized Uses:
   • Battery and Supercapacitor Applications:
     • Improves charge transfer and energy density in energy storage systems.
   • Electromagnetic Shielding:
     • Offers effective EMI shielding for sensitive electronic devices.
   • 3D Printing:
     • Functions as a conductive ink for advanced manufacturing processes.
   • Nanotechnology:
     • Supports the fabrication of graphene-based nanostructures and thin films.
5. Challenges and Mitigation:
   • Ethanol Volatility:
     • Rapid evaporation can complicate application processes.
       • Solution: Apply in controlled environments or use rapid processing techniques.
   • Sedimentation:
     • Graphene may settle during storage.
       • Solution: Shake or ultrasonicate thoroughly before use.
   • High Concentration Viscosity:
     • Increased viscosity compared to lower concentration dispersions may require process adjustments.
       • Solution: Optimize application parameters for uniform spreading and adhesion.

Storage Guidelines:

• Temperature: Store at room temperature in a cool, dry place, away from heat sources or open flames, as ethanol is flammable.
• Container: Use tightly sealed, solvent-resistant containers to prevent evaporation and contamination.
• Agitation: Shake or mix thoroughly before use to ensure uniform dispersion.

Summary:

The Graphene Ethanol Dispersion with 99.5% purity and 2 wt% graphene content is a high-performance material for applications in energy storage, conductive coatings, and advanced composites. The increased graphene concentration enhances conductivity and material strength, making it ideal for use in electronics, automotive, aerospace, and renewable energy industries. Proper storage and handling ensure stability and optimal performance for a variety of industrial and research applications.