What are Multi-Walled Carbon Nanotubes (MWCNTs)?

Multi-Walled Carbon Nanotubes (MWCNTs) are cylindrical nanostructures composed of multiple concentric graphene layers. They exhibit exceptional electrical conductivity, mechanical strength, thermal stability, and chemical resistance, making them ideal for applications in electronics, composites, energy storage, and biomedical fields.

Chemical Properties of Multi-Walled Carbon Nanotubes (MWCNTs)

• Chemical Formula: C
• Outer Diameter: 5 – 100 nm (varies by grade)
• Inner Diameter: 2 – 50 nm
• Length: 1 – 100 μm
• Aspect Ratio: 100 – 10,000 (high aspect ratio)
• Density: ~1.3 – 1.8 g/cm³
• Thermal Conductivity: ~3,000 W/m·K (comparable to diamond)
• Electrical Conductivity: ~10⁴ S/cm (highly conductive)
• Young’s Modulus: 1 TPa (stronger than steel)
• CAS Number: 308068-56-6

Applications of Multi-Walled Carbon Nanotubes (MWCNTs)

1. Electronics & Conductive Materials

   • Used in conductive inks, coatings, and printed electronics.
   • Enhances EMI shielding and static dissipation in electronic devices.

2. Composites & Structural Reinforcement

   • Strengthens polymers, metals, and ceramics for lightweight, high-performance composites.
   • Used in aerospace, automotive, and sports equipment.

3. Energy Storage & Batteries

   • Improves electrode performance in lithium-ion batteries (LIBs) and supercapacitors.
   • Enhances catalytic activity in fuel cells.

4. Biomedical & Drug Delivery Applications

   • Used in targeted drug delivery, biosensors, and tissue engineering.
   • Functionalized MWCNTs aid in cancer therapy and imaging.

5. Water Purification & Environmental Applications

   • Used in adsorption and filtration to remove heavy metals and pollutants.
   • Applied in catalysts for wastewater treatment.

6. Nanotechnology & Advanced Coatings

   • Improves lubrication, wear resistance, and anti-corrosion coatings.
   • Used in smart materials and self-healing coatings.

7. Sensors & Actuators

   • Used in chemical, biological, and gas sensors for high sensitivity detection.

Multi-Walled Carbon Nanotubes (MWCNTs) Prices

Pricing varies based on purity, functionalization, and application requirements.

• Industrial Grade (95% Purity): $50 – $300 per kg
• High Purity (99% – 99.9% for Electronics & Composites): $500 – $2,000 per kg
• Functionalized MWCNTs (COOH, OH, NH₂ Modified for Biotech & Energy Storage): $2,000 – $10,000 per kg

Prices fluctuate based on production methods (CVD, arc discharge, laser ablation), supply chain, and market demand.