Effect of MgH2 on High Entropy Alloys for Energy Application
摘要
The demand for efficient and sustainable hydrogen storageHydrogen storage materials is growing as hydrogenHydrogen becomes a key player in clean energy technologies. Hence, this review explores the effect of magnesium hydride (MgH2) on the hydrogen storageHydrogen storage capabilities of high entropy alloysHigh entropy alloys (HEAs) for energy applications. MgH2 is well-known for its high hydrogenHydrogen capacity but suffers from slow kinetics and high desorption temperaturesTemperature, limiting its practical application. HEAs, with their multi-element composition and high configurational entropy, offer improved structural stability, hydrogenHydrogen diffusionDiffusion, and catalytic properties. By incorporating MgH2 into HEAs, this research shows the potential of enhancing hydrogen storageHydrogen storage performance by lowering desorption temperaturesTemperature, improving hydrogenHydrogen absorption/desorption kinetics, and increasing cycling stability. The synergistic effects between MgH2 and HEAs are critically analyzed, highlighting their potential in energy storageEnergy storage systems. The review also discusses key challenges related to material scalability, long-term stability, and cost, providing insights into future research directions for optimizing MgH2-HEA systems for hydrogen storageHydrogen storage.