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Hydrogen Tanks
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Gaseous Hydrogen Tanks

Composite Over-Wound Gaseous Hydrogen Tanks

Ultima Forma Limited

  • Composite over-wound hydrogen storage vessel
  • Continuous thin metallic hydrogen barrier
  • Integrated bosses for system connection
  • Modular architecture for different capacities and configurations
  • Conformal design potential for space-constrained installations
  • Hydrogen permeability of 2.5 × 10⁻¹⁷ mol/m²·s·Pa
  • Pressure tested to over 850 bar
  • Gravimetric efficiency above 12% stated as possible for a 720 L design case
  • 14% efficiency improvement stated versus typical composite designs

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Description Vendor

Ultima Forma's Composite Over-Wound Hydrogen Storage Vessel combines an advanced composite pressure structure with a continuous thin metallic gas barrier for lightweight high-pressure hydrogen storage. The patented architecture integrates bosses, supports modular capacities and offers conformal design potential for installation in space-constrained vehicles and vessels. Ultima Forma reports hydrogen permeability of 2.5 × 10⁻¹⁷ mol/m²·s·Pa and pressure testing above 850 bar. For a 720 L design case, the company states that gravimetric efficiency above 12% is possible, with a 14% efficiency improvement over typical composite designs.

Use Cases

  • High-pressure gaseous hydrogen storage
  • Aerospace hydrogen storage
  • Automotive hydrogen storage
  • Marine hydrogen storage
  • Defence hydrogen storage
  • Lightweight hydrogen storage where packaging efficiency is critical

Capabilities

  • Stores high-pressure gaseous hydrogen with a low-permeability metallic barrier
  • Combines composite structural efficiency with metallic hydrogen containment
  • Supports custom capacities and conformal geometries
  • Reduces vessel mass while maintaining hydrogen containment performance
Ultima Forma Limited Ultima Forma Limited is a UK advanced-manufacturing company specialising in electroforming and electrodeposited metal structures. Its hydrogen work includes thin metallic barrier liners for high-pressure storage, composite over-wound hydrogen vessels and lightweight twin-walled vacuum piping for liquid-hydrogen transfer. The company supports development from engineering and validation through scalable in-house manufacture.
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