What We're Building

Reimagining how hydrogen
is stored, moved, and used.

Core Technology

The Metal-Alloy Ingot-Sponge

Our flagship technology stores hydrogen within the crystal lattice of a proprietary metal-alloy ingot. Using low-energy manufacturing tehniques, we've created an extremely low density and porous structure optimized for rapidly absorbing and releasing hydrogen whilst maintaining the extreme density.

With higher efficiency and robustness than cryogenic systems, greater density and safety than compressed gas systems, MAIS represents a generational leap in hydrogen storage capability.

  • No cryogenic infrastructure required.
  • Dramatically reduced vessel pressure and wall thickness.
  • Compatible with existing hydrogen supply chains.
  • Scalable from portable to industrial volumes.
  • Fully-reversible absorption and desorption cycle.
  • Extreme shelf stability.
Storage Method Pressure Density Cost/kg
Phoebus MAIS 8.5 bar 6.5 wt% $16.44
Compressed Gas 700 bar ~5 wt% $34.95
Cryogenic ~1 bar ~7 wt% $39.16
Other Solid-State Varies <1 wt% Varies
Applications

Built for every industry
hydrogen serves.

01

Mobility & Fleet

MAIS provides the safety, performance, and ease of fueling automakers demand. Our systems can be tuned for passenger vehicles, commercial trucks, and logistics applications where refueling infrastructure is co-located.

02

Metallurgy

Industrial steel producers are actively transitioning to using hydrogen in the steelmaking process as part of one of the largest and fastest-moving decarbonization trends in heavy industry. For mills which buy hundreds of thousands of tonnes annually, MAIS can save them billions on operational costs.

03

Energy

Packing and storing hydrogen in cryogenic or compressed vessels is extremely capital intensive. MAIS'sm low-energy packing process and excelklent long-term stability make it perfectly suited for various standby and energy storage systems.

04

Industrial Supply

Hydrogen is essential in all manner of industrial and manufacturing processes, including welding, semiconductor manufacturing, petroleum refining, glassmaking, and advanced metrology. MAIS provides a space- and cash-saving solution to these manufacturers and foundries.

05

Agriculture & Fertilization

Hydrogen is the feedstock for ammonia synthesis and the global fertilizer supply by the Haber-Borsch process. Nearly 50% of the world's food production depends on this process. Bringing safe and affordable hydrogen storage directly to the end user helps to massively lower the safety overhead and material costs for farmers and food-producers.

06

Custom Engineered Solutions

Beyond our reference design, we develop bespoke storage systems for partners with specific volumetric, gravimetric, or thermal requirements. If your application moves, stores, or consumes hydrogen, we'd love to hear about it!

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Our Timeline

Where we've been, and where we're going.

Completed MAY 2023

Genesis: Hydrogen-Electric Generator System

One of our founders, Michael Monda, begins the development of a self-fueling hydrogen-electric generator system (US #63/863,916).

Completed MAY 2025

Phoebus American Founded

The company is founded as Phoebus American Hydrogen and Infrastructure Corp. As work on the generator system progressed, we identified storage density as the chief barrier to this product materializing.

Early schematic for the self-refueling generator system.
Completed NOVEMBER 2025

Pivot: From Full-Stack Energy Solutions to Storage Devices

With the designs finalized, it was time to materialize our first example of a generator. While we could easily acquire a fuel cell and an electrolyzer, we could not buy a storage system which met our needs. What would one day become MAIS began as a custom storage solution for this prototype generator. But, if we needed to create a whole new storage method to provide fuel for our simple generator, then it would stand to reason that the storage solution was the real valuable part of the product.

Simple render of the generator system used in marketing materials.
In Progress APRIL 2026

The Metal-Alloy Ingot-Sponge (MAIS)

After dispensing with the generator, Phoebus American continues to develop and evaluate our hydrogen storage solutions. We maintain an office and laboratory at Worcester Polytechnic Institute, where the research identified key concepts related to MAIS, including the production and testing process, general chemical composition, and target microstructure.

TODO: Phoebus employees working in the 100 Institute Road facility.
Upcoming Q2 2027

MVP Completion

After rigorous testing and refinement of the sponge's chemical composition, we expect our first MVP to be completed by Q2 of next year.

The mission continues.