HomeMaterialsCarbon Nanotubes (CNTs)

Advanced carbon material

Carbon Nanotubes (CNTs)

Graphene rolled into a tube, with properties to match. Carbon nanotubes combine extreme strength and conductivity at the nanoscale, and today they are quietly improving almost every lithium-ion battery that uses them.

~60GPa
Tensile strength
Among the strongest measured
~1TPa
Young's modulus
Extremely stiff
~3,000W/m·K
Thermal conductivity
Along the tube axis
~10⁹A/cm²
Current density
Carries enormous current

What is carbon nanotubes (cnts)

Carbon nanotubes are seamless cylindrical lattices of carbon, a nanometre or two across, with walls a single atom thick and lengths thousands of times their diameter. That geometry gives them a rare combination of strength, stiffness and conductivity.

Material properties

What makes carbon nanotubes (cnts) exceptional

Tensile strengthAmong the strongest materials measured
Electrical conductivityCarries current with little loss
Thermal conductivityMoves heat efficiently along the tube
Low densityVery light for its strength
High aspect ratioLong and thin, ideal for networks
StiffnessVery high modulus
Tunable electronicsMetallic or semiconducting by chirality
High surface areaLarge accessible surface per gram
Field emissionEmits electrons at sharp tips

Market outlook

A market scaling fast

The carbon nanotube market is estimated at roughly $4 billion in 2024 and is growing at about a 17 percent CAGR, led by demand for conductive additives in lithium ion battery electrodes. Estimates vary widely across sources.

$4B
Market size, 2024
~17%
CAGR
9
Application sectors tracked
The Carbon Nanotubes Report cover

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Where carbon nanotubes (cnts) appears in our coverage

Application sectors

How carbon nanotubes (cnts) fits the carbon ecosystem

Ecosystem map

4Raw sources
6Processing routes
1Advanced materials
23End applications
RAW SOURCESINTERMEDIATEPROCESSINGADVANCED MATERIALSEND APPLICATIONSPetroleumMineralOtherBiomassCarbon Bearing …Natural GraphiteSynthetic Graph…Petroleum Produ…PlasticsCoalLigninBiomaterialsIndustrial by-p…Captured CO₂PitchPlasmaPyrolysisDetonationLaser AblationCVDArc DischargeCarbon Nanotube…CompositesBatteriesConcreteTextilesAerospaceAutomotiveCoatingsConductive InksConstructionDefense RelatedElectronicsEMI ShieldingEnergy Generati…HealthcareHydrogenLubricantsMembranes & Fil…OptoelectronicsPolymersRubber & Synthe…SensorsSporting GoodsThermal Managem…
Raw Sources
Intermediate
Processing
Advanced Materials
End Applications

The above is for illustration purposes only and does not represent every possible data point.

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Innovation activity

Carbon Nanotubes (CNTs) patents

Live tracking

Tracked live from the Advanced Carbons Council patents database, updated as new filings are indexed.

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Standards and certification

Key Carbon Nanotubes (CNTs) standards

Recent coverage

What we’re reporting

All carbon nanotubes (cnts) articles

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Used in these applications

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At a glance

FormsSWCNT, MWCNT
Diameter~1 nm (SWCNT)
StructureRolled graphene
Largest useBattery additive
SWCNTMetallic or semiconducting