Proof of Disclosure Obligation
HYlight Cylinder: Metal-/composite-based barrier systems and tests for H² diffusion and steel embrittlement
The aim of the project is to develop a high-pressure steel vessel with minimized material usage for the storage and transport of hydrogen. Based on the currently common pressure levels of 300 bar, a vessel with the same wall thickness and material input is to be created for an operating pressure of 500 bar. Compared with existing products on the market, the cylinder to be developed enables either a pressure increase (and thus an increase in the amount of stored hydrogen) of up to 60% or a reduction in wall thickness and material minimization of 30–50%. Using the modular approach of a high-strength steel cylinder and an organic/inorganic coating combination, the vessel layer’s resistance to hydrogen embrittlement is not ensured by the increased wall thickness of the vessel; instead, as part of the sub-project, a comparatively thin-walled vessel is to be equipped with a sufficiently hydrogen-impermeable barrier coating.
