El.Ma. Electronic Machining srl

Via S. Cassiano, 20
38066 Riva del Garda (TN)

Phone: +39 0464 557665 (2 lines)
Fax: +39 0464 550751

How to reach us

HOD Sodium-Borohydride fuelled Hydrogen generator

El.Ma. has built an automatic Hydrogen generator from hydrolysis of Sodium-Borohydride with process control.
This Hydrogen generator, named HOD (Hydrogen-On-Demand™), produces pure Hydrogen through chemical reaction from Sodium-Borohydride NaBH4, using patented catalysts.

4 atoms are given by Sodium-Borohydride and 4 atoms are given by water:

Hydrogen is produced only in desired quantity, in order to mantain constant output pressure to compatible values with traditional fuel cells systems.

Performances of this system are the following:

  • Power: 5 kW
  • H2 flow: 3.8 m3/h
  • Max pressure: 90 psi (6 bar)
  • Gas: pure Hydrogen (CO < 0.5 ppm; CO2 < 10 ppm)
  • Autonomy (max power): 3h

The Hydrogen production cycle is managed by a control process entirely developed by El.Ma.

Following images show HOD connected with two different systems based on fuel cells: the first is produced by ReliON (1 kW) and uses PEM technology, the second is produced by Astris Energi (2.4 kW) and uses AFC technology.
Both generators are connected to a resistive test load.


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