Hydrogen Solid State Storage on MgH2 Compacts for Mass Applications

The mass storage of hydrogen is a challenge considering large industrial applications and continuous distribution, e.g., for domestic use as future energy carrier that respects the environment. For long time, molecular was stored distributed, either gas (pressurized up to 75 MPa) or cryogenic liquid (20.4 K). Furthermore, atomic in solid-state form via metallic covalent compounds still subject intense research limited small scale some practical developments. In addition, other type H chemical routes are being tested, such ammonia LOHC (Liquid Organic Hydrogen Carrier), etc. any case, main constraint remains security. However, Solid State Storage (HSSS) using MgH2 bodies has been shown be feasible terms process safety. its intrinsic volumetric densification proven much better performing with 106:70:45 kgH2/m3 solid (RT):LH K):gas (75 MPa), respectively. Very early on, fairly reactive MgH2-based pellets were produced (for max. ~27 tons/year) at McPhy Energy series unique self-built installations. Thus, design instrumented reservoirs undertaken thanks fundamental first carried out CNRS. So, prototypes units from 100 ~5500 kWh have produced. took few years ago (smelting refueling stations) because HSSS market not merging time. Today, new operator, Jomi–Leman, therefore, decided try again focusing on on-site production HSSS.