Multiwalled Carbon Nanotubes: The Conductive Additive Behind Better Batteries, Now Manufactured in Indonesia

Since their discovery in 1991, carbon nanotubes have become one of the most studied nanomaterials in existence, and multiwalled carbon nanotubes (MWCNTs) are the workhorse version: concentric cylinders of rolled graphene sheets nested inside one another, giving them a combination of electrical conductivity, mechanical strength, and thermal stability that few other materials can match at the nanoscale. That combination is exactly why MWCNTs have become a default conductive additive across batteries, composites, and coatings.

Research labs in Indonesia have typically had to import MWCNTs with genuinely verified purity and a consistent tube structure. That's starting to change.

ITNANO (CV. Inovasi Teknologi Nano), based at the NRE Lab in Medan, is Indonesia's first private nanomaterials research startup manufacturing MWCNTs locally, with quality control run directly on every batch. Here's what MWCNTs actually are, why their structure matters, and where they're being used in research and industry today.

What Are MWCNTs?

MWCNTs are built from several concentric tubes of rolled graphene, nested inside each other like a series of nanoscale cylinders. That layered structure is what sets them apart from single-walled carbon nanotubes: it makes MWCNTs mechanically tougher and easier to produce and disperse in bulk, at the cost of some of the more exotic electronic properties that single-walled tubes exhibit. ITNANO's MWCNTs are supplied at 99% purity, in black powder form, with an outer diameter of 5-10 nm, a length of 10-50 µm, moisture content below 0.5%, and a specific surface area of 350-450 m²/g.

That high aspect ratio, a long tube length relative to a very small diameter, is what makes MWCNTs so effective at forming conductive networks even at low loading, since fewer tubes are needed to bridge particles and create a continuous electrical pathway through a material.

Where MWCNTs Are Being Used

Battery and supercapacitor electrodes

MWCNTs are widely used as a conductive additive in battery and supercapacitor electrodes, forming a conductive network around active materials that boosts electron transport and improves rate performance.

Composite materials

MWCNTs' mechanical strength and high aspect ratio make them a common reinforcing filler in polymer and ceramic composite materials, improving stiffness and strength without adding significant weight.

Conductive coatings and anti-corrosion applications

MWCNTs are also formulated into conductive coatings and anti-corrosion applications, where their conductive network protects underlying surfaces while maintaining electrical continuity.

Sensors, EMI shielding, and photocatalysis

Beyond energy applications, MWCNTs are used in sensors, electromagnetic interference (EMI) shielding, photocatalysis, and solar cells, drawing on the same conductive network and high surface area that make them effective across such a wide range of uses.

Why Source MWCNTs Locally

Tube structure and purity in MWCNTs are properties sensitive to synthesis conditions, and a batch with inconsistent diameter, length, or higher moisture content will deliver lower conductivity and dispersion performance even though its basic chemical composition stays the same. ITNANO, established by the Titian Research Group's NRE Lab, manufactures MWCNTs domestically with consistent quality control on every batch, giving labs in Indonesia a material whose performance is genuinely verified.

Whether you're developing battery or supercapacitor electrodes, formulating composite materials, working on conductive coatings, or researching sensors and EMI shielding, MWCNTs give you a purity and structural consistency that a distant supplier can't guarantee after shipping, without the import wait.

See ITNANO's Conductive Carbon product line for current specifications and pricing.

Get Research-Grade MWCNTs Today

Whether you're working on battery and supercapacitor electrodes, composite materials, conductive coatings, or sensors and EMI shielding, ITNANO gives you direct access to locally manufactured, research-grade Multiwalled Carbon Nanotubes (MWCNTs).

📦 View product specifications at itnano.store

💬 WhatsApp: +62 822-9800-0698

🛒 Also available on Tokopedia, Shopee, and TikTok Shop

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ITNANO is a product line by NRE Lab (CV. Inovasi Teknologi Nano), based in Medan, North Sumatra, Indonesia, advancing local access to graphene, 2D materials, metal-organic frameworks (MOFs), and other advanced nanomaterials for research and industry.