PdMWCNT-AZ61 Solid-State Hydrogen Storage Material

The Challenge

Why hydrogen storage is the bottleneck of the hydrogen economy

To move from producing hydrogen to using it, storage is the hurdle nobody can skip — and that is exactly where PdMWCNT-AZ61 steps in.

⚠️ The dead-ends of mainstream storage

700-bar compressed gas: heavy, with safety concerns and ever-stricter regulation.
Conventional Mg alloys: high capacity, cheap — but slow uptake/release and high desorption temperature (>300°C), stuck in the lab.
AB5 rare-earth alloys: only 1.5–1.65 wt% (at their limit), and the system is heavy and hard to move.

✅ Our approach: a catalysis + structure dual pathway

We build a "MWCNT hydrogen highway" inside the alloy so H₂ diffuses and permeates fast.
Along it we place "Pd super-catalyst stations" that instantly dissociate H₂ and accelerate bonding.
The result: high capacity plus +58% uptake and −31% desorption energy — entering mobile storage.

Performance

Hard numbers, not promises

Measured on AZ61 Mg alloy + 3 wt% Pd/MWCNT composite (375°C, 3 MPa H₂, Sieverts method).

6.15wt%

Reversible capacity

3.7×

vs. AB5 alloy

+58%

Faster kinetics

−31%

Lower desorption Ea

>95%

After 20 cycles

Benchmark

Head-to-head with mainstream solutions

When a customer says "our existing rare-earth alloy is good enough" — show them this table.

Metric	Mainstream (AB5 rare-earth)	PdMWCNT-AZ61 (this material)	Customer benefit
H₂ capacity	1.5–1.65 wt% (at limit)	6.15 wt%	Double-and-double the range at the same weight
System weight	Very heavy, hard to move	Substantially lighter	Enters mobile: ships / drones / heavy trucks
Operating env.	Room temp, but bulky	Mid-high temp (pairs with waste heat)	Recovers existing waste heat — no extra power
Uptake kinetics	Standard	+58%	Faster refuelling, shorter turnaround
Cyclability	—	>95% @ 20 cycles	Dependable service life

How It Works

A three-tier synergy

~5nm Pd nanoparticles anchored on the nanotube walls; ball-milling refines the alloy grains from ~50μm to 18.7nm. Catalysis, structure and interface work together to build multi-scale hydrogen transport channels.

Pd Catalysis

Pd nanoparticles act as H₂ dissociation centres, splitting molecules into atoms and markedly lowering the dissociation barrier.

MWCNT Network

Carbon nanotubes drive intense grain refinement and high dislocation density; grain boundaries and dislocations become fast diffusion "highways" for H atoms.

Interface Nucleation

The Pd/MWCNT/Mg interface offers low-barrier nucleation sites, so MgH₂ nucleates preferentially and avoids a dense hydride layer blocking further reaction.

Applications

Built for these scenarios

Especially suited to teams with high-temperature waste-heat environments and lightweight, high-capacity requirements.

**Fuel cells & hydrogen**High-performance catalyst & storage materials for clean energy.

**Batteries & EV**Conductive nano-materials for next-gen energy storage.

**R&D & catalysis**High-purity nano powders — with full specs, SDS & CoA.

High-temp Fuel Cells (SOFC)

High-efficiency storage integrated with ~600°C system waste heat.

Heavy-duty Green Vehicles

Hydrogen ships, drones and rail — where lightweight, high-capacity storage is essential.

Industrial Waste-heat Storage

Steel and chemical plants turning 200–500°C waste heat into stored energy value.

Distributed Storage / Backup

Low-pressure, endothermic release, non-explosive — the safest solid-state route.

Specifications

Key specifications

CompositeAZ61 Mg alloy + 3 wt% Pd5MWCNT95

Core additivePd/MWCNT(5/95) composite powder

Pd>97% · 5–15nm · 45 m²/g

MWCNT>90% · 250–300 m²/g

Reversible capacity6.15 wt% (90% of theoretical)

Test methodSieverts method

Absorption375°C · 3 MPa H₂ · 90% in 976s

Desorption onset↓ to ~285°C (40°C below pure AZ61)

Desorption Ea142.6 → 98.4 kJ/mol (−31%)

Compliance / supplyRoHS · custom supply

Credibility

Not a concept deck — evidence at the research level

Performance is backed by rigorous research and third-party testing, ready to withstand your engineering team's due diligence.

📄 Peer-reviewed research

Performance derives from a peer-reviewed study (academic–industry collaboration, 42 references) on the hierarchical synergy of Pd-decorated MWCNTs enhancing hydrogen storage in AZ61 Mg alloy.

🔬 Rigorous methods

Storage kinetics measured by the Sieverts method; microstructure characterised by XRD / SEM / TEM / XPS; JMAK fitting confirms 3-D diffusion control (Avrami n = 1.48).

✅ Third-party analysis

Related nano precious-metal materials are verified by independent ICP analysis (e.g., nano-Pt measured at 99.2% purity) — traceable and reproducible quality.

About Us

About ZnoNova

Guangzhou ZnoNova Technology Development Co., Ltd. focuses on the commercialisation and application of advanced hydrogen-energy materials — bringing breakthrough storage materials from the lab to real demand across the hydrogen value chain.

Centred on PdMWCNT-AZ61 solid-state hydrogen storage material, we serve fuel cells, hydrogen vehicles and industrial waste-heat storage with end-to-end support — from material and formulation to application solutions.

Serving China — the world's largest hydrogen market (~30% of global demand, targeting one million fuel-cell vehicles by 2030) — we aim to be the most dependable partner on the materials side.

Why ZnoNova

Research-backed — built on peer-reviewed results; performance is reproducible
End-to-end solutions — material, formulation and application support in one
Stable supply & customisation — specs tailored to your needs, samples available
Close to the hydrogen value chain — fast response, full data under NDA

Commercialising advanced
hydrogen materials

Get Started

Request a sample · get the full datasheet

Tell us your application and we'll reply within 1–2 business days with the relevant data and a sample plan.

Or contact us directly

🏢

CompanyGuangzhou ZnoNova Technology Development Co., Ltd.

📧

Emailalex@znonova.com

📞

Phone+86 189 8883 2169

📍

AddressRoom 1805, Junchao Center, No.652 Huangpu Ave. Central, Tianhe District, Guangzhou, China

💬

WeChat18988832169

🌏 Primary market: China's hydrogen value chain (MEA / stacks / electrolysers / storage integrators). Full data package and samples available under NDA.

FAQ

Frequently asked questions

What is the PdMWCNT-AZ61 hydrogen storage material?

PdMWCNT-AZ61 integrates palladium-decorated multi-walled carbon nanotubes into a magnesium (AZ61) alloy, giving 6.15 wt% reversible hydrogen capacity — about 3.7x that of mainstream rare-earth AB5 alloys — with faster kinetics, lower desorption energy and stable cycling, without high-pressure tanks.

What is the hydrogen storage capacity and performance?

6.15 wt% reversible capacity (about 90% of theoretical), +58% faster kinetics, -31% lower desorption energy and >95% retention after 20 cycles, based on peer-reviewed research.

What applications is it for?

Fuel cells (SOFC / PEMFC), hydrogen vehicles (ships, drones, vehicles), industrial waste-heat storage and distributed / backup power - best for users with high-temperature or waste heat available.

Do you also supply nano platinum, palladium and zinc oxide?

Yes. ZnoNova supplies high-purity nano precious-metal and functional powders - nano platinum (99.2% ICP-verified), palladium catalysts and water-dispersible nano zinc oxide - for catalysis, fuel cells and coatings.

Can I get a sample and datasheet?

Yes - free evaluation samples, the full datasheet, SDS and CoA are available to qualified buyers under NDA.

PdMWCNT-AZ61
Next-Generation High-Capacity Hydrogen Storage Material

KEY METRIC