What are Carbon Nanofibers (CNFs)?

Carbon Nanofibers (CNFs) are high-performance cylindrical carbon structures with diameters ranging from 50 nm to 500 nm and lengths from a few microns to several millimeters. They offer exceptional electrical conductivity, mechanical strength, thermal stability, and chemical resistance, making them ideal for energy storage, composites, catalysis, filtration, and biomedical applications.

Chemical Properties of Carbon Nanofibers (CNFs)

• Chemical Formula: C
• Diameter: 50 – 500 nm
• Length: 1 – 100 μm
• Density: ~1.3 – 2.1 g/cm³
• Thermal Conductivity: ~1,000 W/m·K (high)
• Electrical Conductivity: ~10⁴ S/m (varies with structure)
• Tensile Strength: Up to 7 GPa (stronger than steel)
• Surface Functionalization: Can be modified with (-OH, -COOH, -NH₂) groups
• CAS Number: 308068-56-6

Applications of Carbon Nanofibers (CNFs)

1. Energy Storage & Batteries

   • Used in lithium-ion (Li-ion) and sodium-ion batteries to enhance electrode conductivity and energy storage.
   • Improves electrode performance in supercapacitors and fuel cells.

2. Advanced Composites & Structural Materials

   • Strengthens polymers, rubber, and metal composites for lightweight and high-strength aerospace and automotive applications.
   • Enhances impact resistance and thermal stability in industrial coatings.

3. Electronics & Conductive Materials

   • Used in conductive inks, coatings, and flexible electronics for printed circuit boards (PCBs) and sensors.
   • Applied in thermal interface materials (TIMs) for heat dissipation.

4. Biomedical & Drug Delivery Applications

   • Functionalized CNFs are used in targeted drug delivery, biosensors, and tissue engineering.
   • Applied in antibacterial coatings for medical implants and devices.

5. Catalysis & Chemical Processing

   • Acts as a catalyst support for fuel cells, hydrogen storage, and environmental catalysis.
   • Used in water purification and CO₂ conversion applications.

6. Filtration & Environmental Applications

   • Applied in gas and liquid filtration membranes for air and water purification.
   • Used in carbon capture technologies for reducing emissions.

7. Aerospace & Defense Industry

   • Used in lightweight composites for aircraft, spacecraft, and military applications.
   • Enhances thermal and mechanical resistance in extreme environments.

Carbon Nanofibers (CNFs) Prices

Pricing depends on purity, surface functionalization, and application-specific modifications.

• Industrial Grade (95% Purity, Bulk Production): $50 – $300 per kg
• High Purity (99% – 99.9% for Electronics & Energy Storage): $1,000 – $5,000 per kg
• Ultra-High Purity (99.99% for Biomedical & Research Applications): $10,000 – $20,000 per kg

Prices fluctuate based on production method (CVD, electrospinning, plasma synthesis), functionalization level, and market demand.