Graphene Ethanol Dispersion, Purity: 99.5%, Graphene: 1 wt%

Technical Specification:

1. Material Composition:
   • Graphene Content: 1.0 wt%.
     • Contains 1.0% graphene by weight in the ethanol dispersion.
   • Purity: 99.5% graphene.
     • High-purity graphene ensures minimal impurities, enhancing electrical, thermal, and mechanical properties.
   • Dispersion Medium: Ethanol.
     • A low-viscosity, volatile, and environmentally friendly solvent.
2. Physical Properties:
   • Appearance: Black liquid.
   • Graphene Flake Size: Typically <1 µm, consisting of single-layer or few-layer graphene sheets.
   • Viscosity: Low, due to the ethanol medium, suitable for spray, dip, or spin-coating applications.
   • Density: Approximately 0.79 g/cm³, characteristic of ethanol-based solutions.
3. Electrical and Thermal Properties:
   • Electrical Conductivity:
     • High, attributed to graphene’s superior conductivity.
   • Thermal Conductivity:
     • Excellent, enabling efficient heat dissipation in coatings and composites.
4. Chemical Stability:
   • Dispersion Stability:
     • Uniform suspension with minimal sedimentation under normal storage conditions.
5. Packaging:
   • Delivered in sealed, solvent-resistant containers, available in sizes ranging from 100 mL to 5 liters.

Applications:

1. Primary Applications:
   • Energy Storage:
     • Enhances electrode performance in lithium-ion batteries, supercapacitors, and fuel cells.
   • Conductive Coatings:
     • Creates uniform, thin, conductive films on various substrates.
   • Advanced Composites:
     • Integrates into polymer matrices to improve electrical, mechanical, and thermal properties.
2. Industries:
   • Electronics:
     • Used in sensors, transparent conductive films, and flexible circuits.
   • Automotive:
     • Enhances lightweight conductive parts and battery systems.
   • Energy:
     • Improves performance in renewable energy systems and energy storage devices.
   • Aerospace:
     • Reinforces lightweight materials for structural and electronic components.
3. Advantages for Applications:
   • High Graphene Content:
     • The 1.0 wt% concentration provides enhanced performance in conductivity and material reinforcement.
   • Eco-Friendly Solvent:
     • Ethanol is a safer and less toxic solvent compared to alternatives like NMP.
   • Versatile Processing:
     • Compatible with various application methods such as spraying, dipping, and spin-coating.
   • Stable Dispersion:
     • Maintains uniform distribution of graphene for consistent performance.
4. Specialized Uses:
   • Battery and Supercapacitor Development:
     • Improves charge transfer and energy density in advanced energy storage systems.
   • 3D Printing:
     • Functions as a conductive ink for additive manufacturing of advanced devices.
   • Electromagnetic Shielding:
     • Provides EMI shielding for electronic components and enclosures.
   • Nanotechnology:
     • Facilitates the fabrication of graphene-based nanostructures.
5. Challenges and Mitigation:
   • Ethanol Volatility:
     • Rapid evaporation during application can complicate processing.
       • Solution: Use controlled environments or adjust application parameters for consistent results.
   • Sedimentation:
     • Graphene may settle over time.
       • Solution: Shake or ultrasonicate before use.
   • Concentration Limitations:
     • Even at 1.0 wt%, additional layering may be needed for certain applications requiring higher conductivity.
       • Solution: Optimize layering techniques or adjust application methods.

Storage Guidelines:

• Temperature: Store 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 1.0 wt% graphene content is an advanced material designed for applications in energy storage, conductive coatings, and composite development. Its compatibility with ethanol as a solvent ensures eco-friendly processing and versatility for various industrial and research applications, including electronics, automotive, and aerospace. Proper storage and handling maximize its stability and performance.