Graphene Water Dispersion, Purity: 99.5%, Black Liquid, Graphene: 2 wt%

Technical Specification:

1. Material Composition:
   • Graphene Content: 2.0 wt%.
     • Contains 2% graphene by weight in the water dispersion.
   • Purity: 99.5% graphene.
     • High-purity graphene ensures minimal impurities, enhancing its functional properties.
   • Dispersion Medium: Deionized Water.
     • Provides a stable, eco-friendly, and easy-to-handle colloidal suspension.
   • Appearance: Black liquid.
2. Physical Properties:
   • Graphene Flake Size: Typically <1 µm, consisting of single-layer or few-layer graphene sheets.
   • Viscosity: Moderate viscosity due to the higher graphene concentration, suitable for a variety of coating and processing techniques.
   • pH Range: Neutral to slightly alkaline, depending on the formulation.
3. Electrical and Thermal Properties:
   • Electrical Conductivity:
     • High conductivity, attributed to the increased graphene content.
   • Thermal Conductivity:
     • Excellent, suitable for heat management applications.
4. Chemical Stability:
   • Dispersion Stability:
     • Uniformly dispersed graphene with minimal sedimentation under standard conditions.
5. Packaging:
   • Delivered in sealed containers, available in sizes ranging from 100 mL to 5 liters, depending on user needs.

Applications:

1. Primary Applications:
   • Energy Storage Devices:
     • Enhances electrode conductivity and performance in lithium-ion batteries, supercapacitors, and fuel cells.
   • Conductive Coatings:
     • Creates thin, uniform, and conductive films on various substrates.
   • Composites:
     • Integrates into polymer matrices to improve electrical, mechanical, and thermal properties.
2. Industries:
   • Electronics:
     • Applied in flexible circuits, transparent conductive films, and sensors.
   • Automotive:
     • Enhances lightweight conductive components and battery systems.
   • Energy:
     • Improves performance in renewable energy systems, batteries, and supercapacitors.
   • Aerospace:
     • Reinforces lightweight materials for structural and electronic applications.
3. Advantages for Applications:
   • High Graphene Concentration:
     • 2 wt% dispersion offers enhanced conductivity and material reinforcement compared to lower concentrations.
   • Eco-Friendly Medium:
     • Water-based dispersion minimizes environmental and handling hazards.
   • Versatility:
     • Suitable for various application methods such as spray, dip, spin-coating, and printing.
   • Stable and Uniform:
     • Maintains consistent graphene distribution for reliable results.
4. Specialized Uses:
   • Battery and Supercapacitor Applications:
     • Enhances charge transfer and energy density in energy storage devices.
   • Electromagnetic Shielding:
     • Provides effective EMI shielding for electronics and enclosures.
   • 3D Printing:
     • Functions as a conductive ink for advanced manufacturing processes.
   • Nanotechnology:
     • Facilitates the fabrication of graphene-based nanostructures and thin films.
5. Challenges and Mitigation:
   • Sedimentation:
     • Graphene may settle over time.
       • Solution: Shake or ultrasonicate thoroughly before use.
   • Processing Limitations:
     • High viscosity compared to lower concentration dispersions may require process optimization.
       • Solution: Adjust application parameters for uniform spreading and adhesion.
   • Water Evaporation:
     • Requires controlled drying conditions for consistent film formation.
       • Solution: Optimize drying environments with controlled temperature and humidity.

Storage Guidelines:

• Temperature: Store at room temperature in a cool, dry place, away from direct sunlight or freezing conditions.
• Container: Use tightly sealed containers to prevent evaporation and contamination.
• Agitation: Shake well before use to ensure uniform dispersion.

Summary:

The Graphene Water Dispersion with 99.5% purity and 2 wt% graphene content is a high-performance material designed for energy storage, conductive coatings, and composite enhancement. Its water-based medium ensures eco-friendly handling and versatility, making it ideal for applications in electronics, automotive, aerospace, and renewable energy industries. Proper storage and handling maximize its performance and longevity for various industrial and research applications.