Covalently Functionalized Single-Wall Carbon Nanotubes (SWCNTs, OCSiAl) as Conductive Electrode Additive, 1 g/bottle, CCEACFSWCNT
Use your own shipping account?
We support FedEx, UPS, and DHL third-party billing for institutional customers.
Place your order first, then email shipping@echemsupplies.com with your account details and order number. We'll generate the label using your account and refund your shipping charges, less a handling fee.
In electrochemical engineering, covalently functionalized single-wall carbon nanotubes (SWCNTs) are used as high-performance electrode additives to solve the primary weakness of pristine nanotubes: poor dispersion. While pristine SWCNTs tend to bundle together due to strong van der Waals forces, covalent functionalization attaches chemical groups directly to the sp2 carbon lattice, turning these bundles into a well-dispersed, 3D conductive network.
The addition of covalently functionalized SWCNTs to an electrode (typically at loadings as low as 0.1% to 1.0% wt) provides three major upgrades: (1) Superior Dispersion: Functional groups like -COOH (Carboxyl) or -NH2 (Amine) create electrostatic repulsion or hydrogen bonding with the solvent/binder. This prevents the nanotubes from re-aggregating, ensuring they form a "percolating" network that reaches every active material particle. (2) Enhanced Interfacial Adhesion: Covalent groups can act as chemical "anchors" between the nanotube and the polymer binder (like PVDF or CMC) or the active material (like Silicon or LFP). This creates a mechanically robust electrode that doesn't crack during the volume expansion of charging. (3) Surface Wetting: Functionalization increases the hydrophilicity of the carbon. This allows the liquid electrolyte to penetrate deep into the nanopores of the electrode, reducing ion-transport resistance and boosting high-rate performance.
| Part Number |
CCEACFSWCNTH |
CCEACFSWCNTC |
| Functionalization Group |
Hydroxyl (-OH) |
Carboxyl (-COOH) |
| Outer Diameter |
1-2 nm
|
1-2 nm
|
| Length |
1-50 um
|
1-50 um
|
| Surface Area |
350-500 m2/g
|
350-480 m2/g
|
| Functionalization group content |
3.5-4.0 wt% |
2.5-3.0 wt% |
| Package Size | 1 g/bottle | 1 g/bottle |
Notes: Please try to store the covalently functionalized SWCNT powder in a dry place.
References:
- A. F. Quintero-Jaime, et al. Electrochemical functionalization of single wall carbon nanotubes with phosphorus and nitrogen species, Electrochimica Acta, 2020, 340, 135935.
- G. Wang, et al. Improving the specific capacitance of carbon nanotubes-based supercapacitors by combining introducing functional groups on carbon nanotubes with using redox-active electrolyte, Electrochimica Acta, 2014, 115, 183-188.