Technology

H2Fuel’s hydrogen carrier Sodium Borohydride (NaBH4) are white granules which, provided kept dry, are an extremely safe hydrogen carrier. Sodium Borohydride can be formed at a production site with green-generated electricity and thereafter be transported, stored and distributed under atmospheric conditions with an indefinite shelf life. Its energy density is close to that of diesel and is the highest of all hydrogen alternatives.

The Sodium Borohydride granules are ready for use without any intermediate processes. Through a simple patented exotherm process, which involves adding water of a specific purity to ensure the highest efficiency and an activator (acid) or a catalyst (metal), the hydrogen is released, as well as heat. One of the main advantages of this reaction is that the hydrogen is not only released from the Sodium Borohydride (NaBH4) but also from the water (H2O), hence doubling the amount of hydrogen that was originally stored in the Sodium Borohydride.

Because of the high purity of the water that is added, the regeneration process of H2Fuel’s spent fuel is more effective as no impurities from the water are added to the process. The excess water is partly removed on site by using the heat generated in the exotherm release process. The spent fuel is sent back to the Sodium Borohydride (re)generation site where it is recycled to Trimethyl Borate and Sodium.

Newly produced hydrogen is added to the Sodium to form Sodium Hydride which, together with the Trimethyl Borate, is regenerated to Sodium Borohydride, using almost nothing but green electricity, newly produced hydrogen and the recycled spent fuel. Where an acid is used as the activator for the hydrogen release process, the regeneration is done via this existing process. When a metal catalyst is used for the release process, H2Fuel uses a newly developed patented step in the regeneration process which eliminates the need for an acid.