What is a Graphene Sheet?

A graphene sheet is an ultra-thin, single-layer sheet of carbon atoms arranged in a two-dimensional hexagonal honeycomb lattice. Known as one of the strongest, thinnest, and most conductive materials, graphene exhibits extraordinary mechanical, electrical, thermal, and chemical properties, making it highly valuable in various advanced applications.

Chemical Properties and CAS Number

• Chemical Composition: Pure carbon (C)
• CAS Number: 1034343-98-0
• Stability: Graphene sheets possess excellent chemical stability, resisting corrosion and chemical reactions under various conditions.

Key Properties of Graphene Sheets

• Electrical Conductivity: Exceptional electrical conductivity, outperforming metals such as copper.
• Thermal Conductivity: High thermal conductivity, exceeding traditional materials significantly.
• Mechanical Strength: Tensile strength around 130 GPa, considerably stronger than steel.
• Flexibility and Transparency: Highly flexible and transparent, suitable for flexible electronics and optoelectronic applications.

Applications of Graphene Sheets

1. Electronics and Semiconductors

Graphene sheets significantly improve electronic device performance, transistors, integrated circuits, and sensors due to excellent electrical conductivity and flexibility.

2. Energy Storage

Used in batteries, supercapacitors, and fuel cells, graphene enhances energy storage capacity, charge rates, and device longevity.

3. Composite Materials

Graphene-reinforced composites exhibit enhanced mechanical strength and reduced weight, suitable for aerospace, automotive, and sporting industries.

4. Medical and Biotechnology

Due to biocompatibility and high surface area, graphene sheets are effective in biosensors, drug delivery systems, and tissue engineering applications.

5. Thermal Management

Outstanding thermal conductivity makes graphene ideal for heat sinks and thermal interfaces in electronics and LED lighting systems.

6. Flexible Displays and Wearables

Integrated into flexible displays, smart textiles, and wearable electronic devices, thanks to its transparency, conductivity, and flexibility.

7. Water Filtration and Purification

Graphene membranes offer high-performance filtration capabilities, efficiently removing pollutants, contaminants, and salts at a molecular level.

Graphene Sheets Pricing

Graphene sheet prices depend on factors such as purity, sheet size, thickness, and manufacturing methods:

• Lab-Grade Graphene Sheets: Typically priced from $50 to $250 per gram, suitable for research and specialized applications.
• Industrial-Grade Graphene Sheets: Ranges from $100 to $500 per kilogram, ideal for large-scale industrial use.
• Customized Graphene Solutions: Costs vary significantly based on specific customization and functionalization, typically ranging from hundreds to thousands of dollars.

Factors Influencing Graphene Prices

• Graphene purity and quality.
• Dimensions and thickness of sheets.
• Production methods (chemical vapor deposition (CVD) graphene usually priced higher than chemically reduced graphene oxide).
• Functionalization or special treatment required for specific applications.

Conclusion

Graphene sheets, thanks to their exceptional properties, chemical stability, and diverse applications, are transforming multiple industries, including electronics, energy storage, biotechnology, and composites. Despite varied pricing based on specifications, continual advancements in graphene production technologies are gradually making this remarkable material more widely accessible.