EDEN aims at building a forefront scientific, technological and industrial expertise in energy storage and recovery system. In the past years, hydrogen has been indicated as an advantageous energy carrier under many points of view, mainly environment preservation and high energy density. The necessity of hydrogen on specific mobile applications and energy backup system is promoted by the growing demand of sustainable solutions and the interface of discontinuous renewable energies. Hydrogen storage is well known to be the major bottleneck for the use of H2 as energy carrier and despite the huge scientific and industrial effort in developing a novel practical solution for the hydrogen storage tank, actually there are only few storage systems available for niche markets. The request for energy storage systems is growing as fast as the energy availability from renewable sources, consequently the market is demanding for more performing systems, safer and economic. It is emerged from the past EU projects (STORHY, NESSHY, COSY, NANOHY, FLYHY) that the hydrogen storage in solid state is the most promising solution to pursue in order to achieve  the previously cited objective.

Between the materials studied for solid state hydrogen storage, Magnesium based materials represent nowadays the major candidate able to meet the industrial storage targets: they have proper gravimetric and energetic density (typical >7 wt. %, ≥ 100 kg H2/m3) and suitable charging and discharging time and pressure. The main barrier to the wide use of the Magnesium based materials in hydrogen storage system is represented by two limitations: the working temperature of about 300°C and the high heat of reaction, around 10Wh/g. More specifically, EDEN project aims to overtake these limitations by developing and realising an efficient hydrogen storage system that brings together available solutions from the market, the results of the EU projects on hydrogen storage and the development of novel approach for the storing material.

Four main themes have led to the development of this project:

  1. Delivering energy to buildings, small dwellings and micro-communities by integrating intermitted thermal and electrical power sources with hydrogen storage systems;
  2. Mitigating the problem of intermittent energy delivered to electricity grid. Higher storage capacity at the local level reduces the need to expand the grid;
  3. Providing safe, reliable and high-density energy storage for domestic applications. Mg-based metal hydrides can configure as a safe material and technology, with high energy density (more than 2000 Wh/l);
  4. Provide a viable complete system for hydrogen storage that will compete with the storage systems now available on the market.

EDEN identity

The EDEN logo has been designed having in mind the European flag: 28 small hydrogen molecules coloured in yellow like the stars in the EU flag represent the 28 EU member state, while the main color of the EDEN lettering is in blue. Moreover the ED letter of the logo has been designed to refigure the absorbing material, stacked in planar layer and confined in the EDEN tank. The hydrogen molecules outside the ED recall the position of the stars in the flag, while the hydrogen molecules within the ED recall the action of hydrogen storage.