Single walled Carbon Nanotubes/ Multi Walled Carbon nano tubes

CNT carbon nanotubes (CNTs) are high-purity conductive additives available as single-walled CNTs (SWCNTs) and multi-walled CNTs (MWCNTs) for advanced electrode engineering. CNTs form a percolating nanoscale conductive network within composite electrodes, reducing electronic resistance while also improving mechanical integrity and crack resistance during cycling.

Key Specifications (Typical)

Single-walled CNT (SWCNT)

• Purity: ≥99.7%
• Diameter: 0.75–3 nm
• Length: 1–50 µm
• Tensile strength: ~800 GPa
• Characteristics: high electrical conductivity, thermal conductivity, toughness enhancement
  
  

Multi-walled CNT (MWCNT)

• Purity: ≥99.7%
• Diameter: 2–30 nm
• Length: 0.1–50 µm
• Tensile strength: ~50–200 GPa
• Number of layers: 2–50
• Interlayer spacing: 0.34 ± 0.01 nm
• Characteristics: conductive network formation, thermal conductivity, toughness enhancement
  
  

How it works in electrodes

CNTs bridge active material particles and current collectors, improving electron pathways and helping maintain electrical contact as electrodes expand/contract. This often enables:

• Lower conductive additive loading compared with conventional carbon blacks
• Improved rate capability and power performance
• Better adhesion and mechanical resilience of coated films
  
  

Typical Applications

• Electrical double-layer capacitors (EDLCs)
• Lithium-ion battery electrodes (commonly as a conductive additive; can also support specific anode architectures)
• Conductive composites, coatings, and thermal-management materials
  
  

Compatibility & workflow

Suitable for slurry casting with common binder systems (PVDF/NMP or aqueous CMC/SBR). For best performance, dispersion control is critical (e.g., staged wetting, high-shear mixing, or controlled sonication). ScienceGears can support CNT selection and electrode process optimisation, and can also supply complementary tools such as mixers, film coaters, calendering equipment, battery cyclers, and potentiostats for full electrochemical validation.