Magnesium- und Wasserstoff-Energiespeichermaterialien
Mit Speichern auf Basis von Magnesium oder Magnesiumlegierungen erreicht man theoretisch bis zu 8 % Gewichtsanteil Wasserstoff, praktisch derzeit jedoch nur rund 3,7 %. Batterien und Wasserstoff gleichermaßen zu. Es stellt sich die Frage, ob batterieelektrische Fahrzeuge gefährlicher sind als Pkw mit fossilen Brennstoffen. In westlichen
Are magnesium-based hydrogen storage materials effective?
Mg-based hydrogen storage materials have attracted considerable attention due to their high hydrogen storage capacity and low cost. In order to further improve their performance, researchers have focused on the effects of catalyst addition and composite systems on the hydrogen storage properties of magnesium-based materials.
Can magnesium based alloys be used for thermal energy storage?
Another potential application of magnesium-based alloys is in the field of thermal energy storage. The high enthalpy of hydride formation and the reversibility of the hydrogen absorption/desorption reactions make these alloys promising candidates for thermochemical heat storage systems .
Are magnesium-based materials suitable for solar heat storage?
Currently, magnesium-based materials attract much attention for storage of concentrated solar heat with much higher energy densities than traditional phase change materials. The thermodynamic dynamic properties and high abundancy provide a potential for development of large scale heat storage systems.
Can magnesium based alloys be used as hydrogen storage materials?
The integration of magnesium-based alloys with other hydrogen storage materials, such as metal hydrides and porous adsorbents, can also lead to the development of hybrid hydrogen storage systems with enhanced performance and flexibility.
What challenges do magnesium-based hydrogen storage materials face?
However, magnesium-based hydrogen storage materials also face challenges such as high operating temperature and sluggish reaction kinetics, which have impeded their potential applications , , , .
How are magnesium-based hydrogen storage alloys prepared?
Various nanostructuring techniques have been employed to prepare magnesium-based hydrogen storage alloys, including ball milling, solvothermal synthesis, vapor deposition, and electrochemical methods [98, 99].
