The Luxembourg-based nanotube specialist OCSiAl has signed a supply agreement with Volkswagen Group’s battery division, PowerCo. As part of this partnership, OCSiAl will provide PowerCo with single-walled carbon nanotubes for its Unified Cell battery platform. The materials are intended for PowerCo’s plant in Salzgitter. According to the company, the nanotubes will be used in graphite anodes.
OCSiAl describes the nanotubes as conductive additives. They are designed to increase the electrical conductivity of graphite anodes and improve heat dissipation. The company cites benefits such as improved charging and discharging performance, increased safety, and a longer service life for the battery cells.
Supply from European production
The shipments are planned to come from the OCSiAl plant in Serbia. This would mean that part of the procurement of critical battery materials would take place within Europe. According to OCSiAl, the site has met all quality and reliability requirements and has been audited by PowerCo. Other battery manufacturers from Europe and Asia are said to have also conducted audits.
OCSiAl markets its single-walled carbon nanotubes under the TUBALL brand. The company claims to supply most European manufacturers of batteries for electric vehicles. These materials are used in both the cathode and anode systems of lithium-ion batteries.
OCSiAl notes that approximately one million electric vehicles already contain its nanotubes. In November 2025, the company announced plans to build a graphene nanotube plant in Luxembourg. The investment is expected to total 300 million U.S. dollars.
