Magnesium-based solid-state hydrogen storage principle is that magnesium can react with hydrogen to form magnesium alloy under certain conditions.
Magnesium-based hydrogen storage materials are considered to be one of the most promising metallic hydrogen storage materials because of their large hydrogen storage capacity, abundant resources and low cost. Magnesium-based hydrogen storage materials are white powder, odorless, with high hydrogen storage density, and can be applied in new energy, medicine, agriculture and other fields.
The basic principle is that magnesium can react with hydrogen to form magnesium alloy under certain conditions. In magnesium-based solid-state hydrogen storage technology, magnesium alloy is used as a hydrogen storage material to store and release hydrogen by absorbing and releasing hydrogen. When magnesium alloy is in contact with hydrogen, magnesium absorbs hydrogen to form magnesium hydride compounds. When the stored hydrogen needs to be released, the magnesium hydride can be decomposed into magnesium and hydrogen by heating or pressurizing.
Magnesium-based solid-state hydrogen storage physicochemical properties
Magnesium-based solid-state hydrogen storage material's main component is magnesium hydride, purity > 99%, impurities are mainly magnesium and trace amounts of other metal elements. Magnesium-based solid-state hydrogen storage materials have two ways to release hydrogen:
1, thermal release of hydrogen, in the 300 ℃ - 400 ℃ high temperature conditions can be stabilized release of hydrogen, the specific release temperature depends on the composition and structure of the material. It can realize reversible cyclic hydrogen storage and release, and the density of cyclic hydrogen storage and release is >6.0wt%, which can be used for large-capacity and long-distance hydrogen storage and transportation, solid-state hydrogen refueling station and fuel cell power system.
2, water-liberated hydrogen, magnesium-based solid-state hydrogen storage material contains negative hydrogen ions, in a humid environment or water will be hydrolyzed to produce indispensable magnesium ions and high-quality antioxidant hydrogen, hydrogen density of magnesium-based solid-state hydrogen storage material of 15 wt%, in small equipment power systems, medical, health and other fields with a wide range of application value.
Refer to Baidu Encyclopedia-Magnesium-based solid-state hydrogen storage material for the above content