Carbon Nanotubes Market Size & Share Analysis - Growth Trends and Forecast (2026 - 2031)

Global Carbon Nanotubes Market Trends and Insights

E-mobility Boom Accelerating CNT Demand

Electric-vehicle battery packs now incorporate 0.5-2.0 wt% CNTs to maintain electron pathways across silicon-graphite anodes that swell during cycling. LG Chem’s four South Korean plants deliver 6,100 tons/year output under multi-year contracts with Tier-1 automakers, locking in supply for global platform launches. China’s New Energy Vehicle plan sets a 50,000 tons/year CNT requirement by 2025, already matched by Jiangsu Cnano’s 12,000 ton/year single-site capacity. The migration toward lithium-iron-phosphate chemistries intensifies demand because LFP cells need higher conductive-additive loadings. Solid-state prototypes from QuantumScape and Samsung SDI embed nanotube current collectors, positioning CNTs as a bridging solution through the 2030s

Leap in High-Energy-Density Li-ion and Supercapacitor Production

Vertically aligned CNT forests deliver surface areas above 1,000 m²/g that drive supercapacitor power densities of 10-15 kW kg. Resonac Holdings supplies dispersions for 48-V mild-hybrid modules that buffer load spikes and extend pack life. Laboratory CNT-sulfur cathodes have reached 400 Wh kg, though commercial timelines depend on polysulfide mitigation. Kumho Petrochemical operates a 1,200-ton/year plant delivering ultra-pure grades with <100 ppm metals for supercapacitors. Grid projects in California and Germany pilot CNT-supercapacitor banks that could absorb 5,000 tons/year by 2030 once costs fall below USD 200 kWh.

Aerospace Push for Ultra-Light Structural Composites

Toray Industries invested JPY 5 billion from 2024-2026 to scale CNT-enhanced prepregs that cut airframe weight by 20% while adding EMI shielding above 60 dB^{[1]Toray Industries, “Annual Report 2025,” toray.com} . NASA tests show 1 wt% CNT in epoxy raises lightning-strike resistance by 40%, easing certification hurdles. Airbus and Boeing evaluate CNT-doped resins for wing spars that can deliver 12% lifetime fuel savings. Defense programs seek CNT radomes that survive Mach 5 heat loads while staying radar transparent. Nanocyl’s NC7000 functionalization improves laminate dispersion, although aerospace qualification extends three to five years.

Additive Manufacturing Integration for Conductive Filaments

CNT-filled 3D-printing filaments enable rapid production of antenna housings, EMI gaskets, and flexible circuits, shrinking prototyping cycles from weeks to hours. Applied Nanostructures supplies single-walled grades for aerospace tooling where static dissipation is critical. Automotive plants print CNT-PLA sensor enclosures, achieving 10⁶ S m conductivity at 10 wt% % loading, eliminating secondary metallization steps. Stratasys and Ultimaker ship printers with CNT filament profiles, moving technology from lab to factory. Nozzle abrasion challenges spurred ruby-tip designs that quintuple lifespan, cutting the total cost of ownership. ISO/ASTM 52900 amendments to cover CNT composites will speed adoption in regulated sectors.

Occupational Toxicology and Nano-Regulation Tightening in EU and US

The European Chemicals Agency listed multi-walled CNTs as substances of very great concern under REACH Annex XIV in 2024, triggering costly authorization filings for users above 1 ton/year^{[2]European Chemicals Agency, “REACH Annex XIV Decision 2024,” echa.europa.eu}. NIOSH set a 1 µg m³ exposure limit that forces enclosed handling and real-time aerosol monitoring, adding USD 2-5 million in capex for mid-scale plants. Long CNT fibers longer than 15 µm show asbestos-like inflammation in rodent lungs, though human epidemiology remains limited. Smaller European firms see compliance costs topping 15% of revenue, accelerating consolidation. ISO 80004 terminology harmonization helps, but divergent national rollouts still hamper cross-border supply chains. Producers invest in surface treatments that shorten aspect ratios below 10:1, a strategy that early in-vitro assays suggest lowers cytotoxicity.

Competition from Graphene and Boron-Nitride Nanotubes in Thermal Apps

Graphene nanoplatelets reach in-plane thermal conductivities of 3,000-5,000 W m-K, surpassing CNT composites in two-dimensional heat spreaders for smartphones and LED modules. Boron-nitride nanotubes deliver similar heat conduction while remaining electrically insulating, preferred in high-voltage power electronics. Scaled Chinese graphene plants cut multi-layer prices to USD 100-200 kg in 2025, squeezing CNT cost advantage in non-conductive roles. Hybrid graphene-CNT blends add complexity to supply chains and quality assurance. Patent filings for graphene conductive inks rose 40% YoY in 2024, hinting at displacement risk in printed electronics if print resolution issues resolve. CNT suppliers counter by stressing superior aspect ratios for percolation, flexibility for wearables, and validated aerospace pedigrees.

Segment Analysis

By Type: Multi-Walled Variants Dominate Cost-Sensitive Volumes

Multi-walled CNTs commanded 90.03% of carbon nanotubes market share in 2025 and are forecast to advance at a 20.67% CAGR through 2031. Pricing between USD 50-300 kg secures traction in battery, composite, and plastics lines where cost sensitivity overrides ultimate conductivity. Single-walled grades’ USD 1,500-2,000 kg prices confine them to semiconductor and quantum-computing uses that prize purity and narrow diameter spread. Emerging few-walled variants from OCSiAl preserve 70% of SWCNT conductivity at 40% of the cost, enticing battery makers aiming to slash additive loadings without sacrificing performance. Armchair SWCNTs target OLED conductive films once sheet resistance falls below 100 Ω/sq, a milestone expected within three years.

Supply scalability favors multi-walled feedstock because CVD mega-plants deliver volumes unattainable with HiPco or laser ablation. The carbon nanotubes market size for multi-walled products is projected to exceed USD 13 billion by 2031 under base-case demand scenarios. Regulatory clearance is smoother as larger diameters reduce fiber biopersistence. Yet premium single-walled lines keep margins high through IP-protected purification, commanding 30-40% EBIT. Producers that straddle both tiers hedge revenue streams, capturing high-volume commodity sales while cultivating specialty niches in photonics and quantum devices.

Note: Segment shares of all individual segments available upon report purchase

By Manufacturing Method: CVD Scales While Arc Discharge Retreats

CVD processes generated 70.21% of 2025 output and will sustain a 21.80% CAGR, cementing leadership as gas-looping reactors lift conversion efficiency to 95% and recycle catalysts. HiPco maintains a considerable market size for electronics-grade single-wall lines, although batch limits and high CO pressures cap daily throughput. Arc discharge shrank, and laser ablation volume is relegated to laboratory supply, where purity trumps economics. Raymor’s closed-loop methane recovery slashes feedstock costs by 60%, underpinning a USD 25 million battery-sector contract signed in 2025.

Prospects hinge on energy intensity and regulatory compliance. Plasma-enhanced CVD at 400 °C promises direct growth on polymer films for wearable electronics, a niche that could capture 5% of the carbon nanotubes market size by 2029 if scalability tests succeed. Arc discharge remains essential for prototype research as it yields pristine crystals, yet the electricity use of 10 kWh g undermines commercial viability. Producers pivot toward modular CVD lines that can track regional demand, trimming logistics lead times from quarters to weeks.

By End-Use Industry: Energy Leads While Healthcare Surges

Energy applications absorbed 31.06% of the 2025 volume, reflecting entrenched use in lithium-ion batteries and supercapacitors. Healthcare posts the fastest 32.42% CAGR as CNT-based biosensors and drug carriers move through Phase I trials. Electrical and electronics demand is propelled by conductive inks for PCBs and radio-frequency shielding films. In automotive CNT-reinforced composites, cut part weight without sacrificing stiffness. Demand from aerospace and defense is driven by lightning-strike protection and radar-transparent composites.

By 2031, the carbon nanotubes market size for healthcare is anticipated to gain significant momentum once biosensing, imaging, and targeted delivery platforms gain regulatory clearance. Automotive demand scales with EV output; 50-200 g CNTs per battery pack translates to multikiloton volumes when global EV production reaches 30 million units. Aerospace growth depends on qualification timelines, yet Boeing’s 777X wing-spar specification could consume 500 ton/year from 2027 onward. Construction and textiles remain niche but expand steadily as smart fabrics and RF-shielded concrete find new adopters.

Note: Segment shares of all individual segments available upon report purchase

Geography Analysis

Asia-Pacific dominated with 54.45% of the 2025 volume and is forecast to rise at 21.67% through 2031. China’s 12,000-ton/year Jiangsu Cnano complex and South Korea’s 6,100 tons/year LG Chem network anchor regional supply pipelines to CATL, BYD, Samsung SDI, and SK Innovation. Japan prioritizes high-purity lines for aerospace and semiconductors, leveraging Toray’s ¥5 billion prepreg expansion. India relies on imports today, but incentives under its PLI scheme could spark domestic CVD projects by 2028. Regional pricing sits at USD 50-80 kg for multi-walled grades due to integration into petrochemical feedstocks and scale economies.

North America's market growth is influenced by domestic sourcing from the aerospace, defense, and energy storage industries. Inflation Reduction Act tax credits support potential 2,000-ton/year new capacity colocated with battery gigafactories. Canada’s Raymor markets low-carbon plasma-torch CNTs powered by hydropower, while Mexico offers dispersion and compounding services for automotive suppliers.

Europe's captured CNT demand is bolstered by the European Battery Alliance’s drive for local conductive additives. Nanocyl and Arkema operate mid-scale plants serving Airbus and Stellantis platforms, yet REACH compliance adds cost layers that pressure smaller entrants. Thomas Swan’s U.K. lines secure defense demand where ITAR rules deter Asian imports. South America and the Middle East-Africa are witnessing gradual market growth, with Brazil importing CNTs for agrochemicals and Saudi Arabia studying petrochemical integration as part of Vision 2030.