OCSiAl has enhanced the production capacity of single-walled carbon nanotube powder through technological innovation, while also introducing a new generation of high-solid content conductive products. Compared to existing products, the solid content has increased by more than 2 times, further reducing the cost of using single-walled carbon nanotubes and improving cost-effectiveness.
The latest high-solid conductive product is now available in the Chinese market, and the next step is to promote it to the European market.
OCSiAl is a global leader in single-walled carbon nanotube (SWCNT) technology and manufacturing. By expanding its SWCNT production capacity and improving the cost-effectiveness of TUBALL BATT products, OCSiAl further solidifies its leading position in the global SWCNT market. Furthermore, compared to existing solutions, the new generation conductive slurry features a 2.5-fold increase in SWCNT content, which helps further reduce the cost of lithium-ion battery products and improves the economic viability for Chinese battery manufacturers to use high-quality SWCNTs sourced from Europe.
For both positive and negative polarity applications, OCSiAl provides high solids solutions. Compared to traditional conductive agents such as multi-walled carbon nanotubes and carbon black, TUBALL BATT offers a higher cost-effectiveness ratio. Compared to multi-walled carbon nanotubes, single-walled carbon nanotubes require only 1/10 of the amount to be added.
TUBALL BATT NMP, a new product with 1% solid content, is used for the positive electrode, and TUBALL BATT H2O, with 0.8% solid content, is used for the negative electrode. This combination effectively helps lithium battery manufacturers further improve product performance. The core advantage of the new conductive electrolyte product lies in the high content of single-walled carbon nanotubes, which is 2–2.5 times higher than existing products. "The single-walled carbon nanotube content in all series of single-walled carbon nanotube-based dispersions represents an industry-leading level. Adding the same amount of single-walled carbon nanotubes in the battery electrodes requires less solvent, allowing battery manufacturers to achieve higher solid content in the slurry. Furthermore, the high-solid content dispersion is undoubtedly more cost-effective compared to existing products, significantly improving the cost-effectiveness.
Furthermore, due to reduced material consumption in the manufacturing, transportation, storage, and battery production processes, logistics costs have also decreased by 2-2.5 times, which promotes the sustainable development of the industry.
These two new products are currently manufactured domestically in China.
OCSiAl produces high-quality single-walled carbon nanotubes under the TUBALL brand. Currently, TUBALL single-walled carbon nanotubes exhibit superior performance compared to other single-walled carbon nanotubes available in the Chinese market. The diameter of TUBALL single-walled carbon nanotubes is 1.6 (±0.4) nm, with lengths exceeding 5μm and an aspect ratio exceeding 3000. OCSiAl provides high-quality single-walled carbon nanotubes for lithium-ion batteries, with single-walled carbon nanotube content exceeding 99%. The G/D ratio is an important indicator for assessing the quality and defect level of single-walled carbon nanotubes. Therefore, TUBALL single-walled carbon nanotubes are considered high-quality products.
OCSiAl's single-walled carbon nanotubes possess unique morphology, physical, and mechanical properties, such as high length-to-diameter ratio and high flexibility, making them ideal for high-performance conductive and reinforcing materials. Unlike short and rigid multi-walled carbon nanotubes, single-walled carbon nanotubes create a strong, long-range conductive network between active material particles, improving key battery characteristics such as enhanced cycle life, reduced DCR (DC resistance), improved rate performance, and internal cohesion between active materials. This is particularly important for systems with high volume expansion, such as silicon-based anodes, where OCSiAl's single-walled carbon nanotubes can significantly mitigate degradation issues and effectively promote the industrial application of silicon as a high-capacity anode material. Thanks to TUBALL's single-walled carbon nanotubes, silicon-oxygen anodes can now explore up to 90% silicon content, enabling industrial batteries with energy densities of up to 360 kWh/kg, and even higher breakthroughs.
In the positive electrode, robust TUBALL single-walled carbon nanotube networks can enhance the internal cohesion—strengthening the bonding between active material particles—and are currently widely used in thick coating systems. In future thick coating systems for ternary and lithium iron phosphate (LFP) electrodes, these networks will contribute to improving the flexibility and stability of the electrodes.