OCSiAl expands TUBALL SWCNT line for silicon anodes and solid-state batteries as it doubles production capacity

OCSiAl has unveiled an expanded range of TUBALL single-wall carbon nanotube (SWCNT) dispersions specifically engineered for silicon-rich anodes, high-energy cathodes, and solid-state battery chemistries. The new portfolio includes products designed to enhance the performance and durability of silicon anodes, which typically suffer from volume expansion during lithiation. By using ultralong SWCNTs, these dispersions create more robust conductive networks at lower loadings, helping to maintain electrical contact through repeated charge cycles. Additionally, a dispersion tailored for lithium-ion cells with lithium-carboxymethyl cellulose (Li-CMC) binders aims to improve first cycle efficiency and charge rate capabilities. On the cathode front, OCSiAl offers NMP-based ultrafine dispersions intended for high-energy cells, promising improvements in power density and electrochemical performance. The company has also introduced a product line for solid-state batteries, providing ready-to-use dispersions compatible with emerging solid-state electrode chemistries. A key selling point for OCSiAl is the high G/D ratio of their nanotubes, indicating fewer structural defects and superior electrical conductivity. This, combined with over a decade of consistent industrial-scale production, positions the company as a reliable partner for manufacturers seeking to qualify new electrode materials. OCSiAl is simultaneously accelerating its production capacity to meet growing demand. A second nanotube synthesis unit is scheduled to launch in 2026, effectively doubling current output, with plans for two additional units within the following year that will quadruple overall capacity. This expansion is complemented by a project in Luxembourg designed to enhance the company’s global manufacturing footprint, targeting a total SWCNT production capacity of up to 1,000 tonnes. Alongside synthesis, dispersion production facilities are also being scaled up across Europe and Asia to support diverse market needs. The company highlights a broad range of applications driving demand for its products, including energy storage systems, uninterruptible power supplies (UPS), battery backup units, electric vehicles, and consumer electronics. These sectors prioritise not only energy capacity but also fast discharge response and high power density, areas where OCSiAl’s nanotube dispersions can deliver significant performance benefits. As the battery industry continues to evolve, OCSiAl’s expanded product portfolio and increased manufacturing capabilities position it well to support next-generation energy storage technologies.