PdMWCNT-AZ31 / AZ61 Solid-State Hydrogen Storage | 6.89 wt%

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-AZ31 / 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, in AZ61: high capacity plus +58% uptake and −31% desorption energy. In AZ31 the same catalyst reaches 6.89 wt% capacity with −26% desorption energy — two alloys, two papers, one catalyst.

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-AZ31 / 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-AZ31 / 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.

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Email[email protected]

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Phone+86 139 2512 2895

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

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WeChat13925122895

🌏 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-AZ31 / AZ61 hydrogen storage material?

It pairs a Pd-decorated multi-walled carbon nanotube catalyst with commercial magnesium alloy. Two peer-reviewed Q1 papers validate it on two different alloys: 6.89 wt% hydrogen capacity in AZ31 (99% of the corrected theoretical value) and 6.15 wt% reversible capacity in AZ61 — about 3.7x 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?

In AZ31 with 5 wt% catalyst: 6.89 wt% capacity (99% of the corrected theoretical value), 446 s absorption / 735 s desorption at 375 °C, desorption activation energy down 26% (132.7 to 98.5 kJ/mol). In AZ61 with 3 wt%: 6.15 wt% reversible capacity and +58% faster kinetics, desorption activation energy down 31% (142.6 to 98.4 kJ/mol). Both retain >95% over 20 cycles.

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-AZ31 / AZ61
Next-Generation High-Capacity Hydrogen Storage Material

KEY METRIC