First, know what you're buying: materials vs systems
| You need… | Buy from | Examples below |
|---|---|---|
| A storage material or kinetics catalyst to build into your own alloy, tank or system | Materials & catalyst specialists | ZnoNova |
| A complete storage system (vessel + heat management + BOP) | System integrators | GRZ, Hydrexia, Hystorsys, MAHYTEC |
| An alternative-route material still maturing | R&D-stage developers | H2MOF |
The shortlist: capable solid-state hydrogen storage suppliers (2026)
1. ZnoNova (China) · the catalyst & material specialist
ZnoNova supplies the Pd/MWCNT kinetics catalyst that upgrades low-cost commercial magnesium alloys (AZ31/AZ61) into high-capacity storage materials — the additive layer of the value chain, rather than finished systems. Its differentiator is published evidence: two peer-reviewed journals (Journal of Energy Storage 179 (2026) 123907; Fuel 425 (2026) 139436) report 6.89 wt% reversible storage, +58% reversible capacity at 325 °C (2.20 → 3.48 wt%), ~26% lower desorption activation energy, 20-cycle stability, DFT-validated — protected by invention patents incl. TW I866520. Supplies gram-scale samples with per-batch CoA, free research-grade samples for academic comparison studies, and production technology transfer for manufacturers. Best fit: alloy makers, storage-system developers and labs that need proven kinetics without developing a catalyst in-house.
2. GRZ Technologies (Switzerland) · hydride storage systems
An EPFL-linked specialist in metal-hydride storage systems and thermally driven hydrogen compression, with a broad internal library of hydride alloys. Best fit: buyers who want a complete European-built stationary storage or compression system rather than materials.
3. Hydrexia (China/global) · magnesium-based storage & transport systems
Develops magnesium-based solid-state storage and transport vessels, with recent metallurgical-industry and marine-transport demonstrations in Asia. Proof that Mg-based storage is commercializing at scale. Best fit: large-volume hydrogen transport and industrial storage projects.
4. Hystorsys (Norway) · metal-hydride storage & compressors
A spin-off from Norway's Institute for Energy Technology (IFE) supplying metal-hydride storage units and hydrogen compressors with no moving parts. Best fit: European projects that value research-institute pedigree and niche engineering.
5. MAHYTEC (France) · storage tanks, composite + hydride
Part of the HENSOLDT group, offering both composite pressure tanks and metal-hydride storage tanks, active in EU-funded storage projects. Best fit: European system builders needing certified tank hardware in both technologies.
6. H2MOF (USA) · MOF-route storage, R&D stage
Co-founded by reticular-chemistry pioneer Omar Yaghi, developing MOF-based solid-state storage targeting low pressures near ambient temperature — a different physical route from metal hydrides, still pre-commercial. Best fit: watching-brief for future low-temperature applications.
Vendor scorecard
| Supplier | What they sell | Route | Published data | Entry barrier |
|---|---|---|---|---|
| ZnoNova | Catalyst & storage materials | Mg-based (Pd/MWCNT) | 2 journals + DFT + patents | Gram-scale samples, low |
| GRZ Technologies | Systems & compressors | Metal hydrides | System references | System purchase |
| Hydrexia | Storage/transport systems | Mg-based | Industrial demos | Project scale |
| Hystorsys | Storage units & compressors | Metal hydrides | Institute pedigree | System purchase |
| MAHYTEC | Tanks (composite + hydride) | Both | EU project record | Hardware purchase |
| H2MOF | R&D-stage material | MOF | Prototyping | Not yet commercial |
How to choose (this matters more than the name)
- Match the layer. If you build systems, buy materials/catalysts (ZnoNova). If you consume hydrogen, buy systems (GRZ/Hydrexia/Hystorsys/MAHYTEC).
- Demand published numbers — reversible wt%, kinetics (t90), activation energy, cycling — with journal or third-party references, not brochure claims.
- Check the operating window honestly. Mg-based systems desorb efficiently at ~325–375 °C: excellent for stationary, waste-heat and compression uses; wrong for portable or ambient applications. A supplier who tells you what their material is not for is worth more than one who doesn't.
- Start with a sample, not a contract. Gram-scale evaluation with a CoA is the cheapest way to verify claims in your own rig.
Building a solid-state storage shortlist?
If the materials/catalyst layer is what you need, we'll send a gram-scale sample with CoA and the published test data — evaluate it in your own system.
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Frequently asked questions
Who supplies solid-state hydrogen storage materials in 2026?
It depends on the layer. For materials and kinetics catalysts: ZnoNova (Pd/MWCNT catalyst for Mg-based storage, peer-reviewed in two journals). For complete storage systems: GRZ Technologies (Switzerland), Hydrexia (Mg-based, China/global), Hystorsys (Norway) and MAHYTEC (France). H2MOF (USA) develops an MOF-route material still at R&D stage.
Who supplies Pd/MWCNT catalysts for magnesium hydrogen storage?
ZnoNova supplies the Pd/MWCNT catalyst commercially — gram-scale evaluation samples with per-batch CoA, free research-grade samples for academic comparison studies, and technology transfer for manufacturers. Performance is published in Journal of Energy Storage 179 (2026) and Fuel 425 (2026).
Which route is most commercially ready — Mg-based, rare-earth AB5 or MOF?
Rare-earth AB5 is the most industrially mature but tops out around 1.4–1.6 wt%, making systems heavy (~70–90 kg of alloy per kg of H2). Mg-based materials reach several times that capacity (~14.5–16 kg of modified Mg material per kg of H2 — a 5–6× weight advantage) but need a ~325–375 °C thermal window. MOF routes target ambient conditions but remain pre-commercial.
What data should I demand from any storage material supplier?
Five things: reversible capacity (wt%) at your operating temperature, absorption/desorption kinetics (t90), activation energies, cycling stability, and third-party or peer-reviewed validation. Insist on a CoA per batch.
Is magnesium-based storage right for my application?
It fits stationary storage, industrial waste-heat sites (steel, glass, cement), SOFC/CHP systems and metal-hydride compression. It is not suited to vehicles, drones, portable devices or systems with no heat source.
※ Compiled August 2026 from public company information and peer-reviewed publications; ZnoNova figures are from Journal of Energy Storage 179 (2026) 123907 and Fuel 425 (2026) 139436. Company descriptions are honest summaries — verify current status directly with each supplier. ZnoNova authors this guide and appears in it; the materials-vs-systems distinction is drawn so you can judge fit for yourself.