Carbon Nanotubes Market

The global battery-relevant carbon nanotubes market size was USD 1.35 Billion in 2025 and is expected to register a revenue CAGR of 24.0% during the forecast period. This report, consistent with Faradex Partners' battery market intelligence mandate, covers the carbon nanotube demand relevant to battery electrode conductive additives rather than the full cross-industry carbon nanotube market spanning composites, coatings and electronics. Market revenue growth is supported by OCSiAl, the world's largest industrial producer of single-wall carbon nanotubes, which markets its products under the TUBALL brand and states that batteries containing its nanotubes already power approximately one million electric vehicles worldwide. In November 2025, OCSiAl announced a USD 300 million graphene nanotube production facility in Luxembourg, where the company is headquartered, reinforcing its production capacity ahead of continued customer qualification growth. These are some of the key factors driving revenue growth of the market.

Single-wall carbon nanotube producers and multi-wall carbon nanotube producers are the commercial categories that constitute the battery-relevant carbon nanotubes market, with conductive additive applications in graphite and silicon anodes, and increasingly in cathode systems, the primary demand source. For instance, in June 2026, OCSiAl was named a supplier to PowerCo, the battery manufacturing subsidiary of Volkswagen Group, for its Unified Cell battery platform, with single-wall carbon nanotubes for PowerCo's Salzgitter, Germany facility to be supplied from OCSiAl's production site in Serbia. Added to a graphite anode as a conductive additive, single-wall carbon nanotubes raise electrical conductivity and improve heat dissipation, allowing cells to operate at higher charge and discharge currents without overheating, according to the company.

However, the battery-relevant carbon nanotube market remains heavily concentrated in a small number of producers, with OCSiAl representing the dominant single-wall carbon nanotube supplier globally, creating single-supplier dependency risk for battery manufacturers that qualify nanotube conductive additives into their electrode formulations. Conductive additive loading levels below 0.5% by weight, while economically efficient for battery manufacturers, also mean that carbon nanotube revenue remains a small fraction of overall battery material cost even as the technology's performance contribution to cell conductivity and fast-charging capability grows, limiting the category's addressable revenue pool relative to its technical significance. These factors substantially limit carbon nanotubes market growth over the forecast period.

Based on application, the global battery-relevant carbon nanotubes market is segmented into anode conductive additives, cathode conductive additives, and other battery applications. The anode conductive additive segment commands the largest revenue share because graphite anodes, which account for the substantial majority of global lithium-ion battery volume, have the longest-established qualification history with single-wall carbon nanotube additives, and OCSiAl states it supplies the majority of electric vehicle battery manufacturers in Europe with TUBALL nanotubes for this specific application.

The silicon-anode conductive additive segment is expected to register the fastest revenue growth rate in the global carbon nanotubes market over the forecast period, from a small 2025 base. OCSiAl's October 2024 memorandum of understanding with NEO Battery Materials to develop high-specification silicon anodes using single-wall carbon nanotubes illustrates the category's emerging role in silicon anode commercialisation, with the company stating that its nanotubes can increase battery cycle life by up to four times when added to silicon anodes as both a conductive additive and structural coating material, a performance contribution silicon anode developers profiled separately in Faradex Partners' Nanowire Battery Market report increasingly rely on to manage silicon's volume expansion during charging.

• 01What is the global battery-relevant carbon nanotubes market size in 2025 and what CAGR is expected during 2026-2035?
• 02What supplier relationship did OCSiAl establish with PowerCo in June 2026, and for which battery platform?
• 03What Luxembourg facility did OCSiAl announce in November 2025, and how much did the company invest?
• 04How many electric vehicles does OCSiAl state are currently powered by batteries containing its carbon nanotubes?
• 05What memorandum of understanding did NEO Battery Materials sign with OCSiAl in October 2024?
• 06Why does the anode conductive additive segment account for the largest application revenue share in the global carbon nanotubes market?
• 07Why does the silicon-anode conductive additive segment register the fastest revenue growth rate in the global carbon nanotubes market over the forecast period?
• 08What cycle life improvement does OCSiAl state its single-wall carbon nanotubes provide when added to silicon anodes?
• 09Which Chinese manufacturers were authorised to produce OCSiAl's TUBALL BATT nanotube dispersions locally, and when?
• 10Why does Asia Pacific lead the global carbon nanotubes market by 2025 revenue share?

This report covers the global battery-relevant carbon nanotubes market across all major segments and geographic regions, scoped to conductive additive demand for battery electrodes rather than the broader cross-industry carbon nanotube market. Primary research combines panel conversations with industry experts and is cross-referenced against company annual reports and government agency data. All market size figures use 2025 as the base year with a 2026-2035 forecast period.