Unlocking Hydrogen Potential: The Magic of Magnesium
London, Monday, 23 June 2025.
Researchers have discovered that adding magnesium to La–Mg–Ni alloys greatly enhances hydrogen storage efficiency. This breakthrough is pivotal, promising higher effectiveness of hydrogen as a sustainable energy source, potentially transforming industries.
The Role of Magnesium in Hydrogen Storage Alloys
Recent research has illuminated how magnesium (Mg) enhances the hydrogen storage capabilities of La–Mg–Ni-based alloys significantly. By integrating Mg, scientists managed to mitigate issues such as lattice strain and pulverisation, thereby improving the alloys’ capacity retention rates up to 91% after 100 cycles [1]. This enhancement enables these materials to potentially revolutionise hydrogen storage solutions, addressing absorption and desorption inefficiencies that have long plagued the industry [1].
Performance Improvements with Mg Addition
A prime example of these advancements is seen in Nd1-xMgxNi3.50 alloys. When magnesium content is increased to x = 0.30, these alloys exhibit a plateau pressure of 0.81 MPa and a dehydriding enthalpy change of 19.18 kJ mol−1, while maintaining a 100th-cycle capacity retention rate of 91% [1]. These improvements are attributed to the promoted crystallographic stability and reduced cell parameters, which significantly enhance the alloys’ performance [1].
Implications for the Hydrogen Economy
The integration of magnesium in hydrogen storage materials is not merely a technical achievement; it represents a crucial step towards the broader adoption of hydrogen as a clean energy source. As the global shift towards hydrogen energy gains pace, these materials could play a vital role in making hydrogen storage more feasible and cost-effective [1][3]. With upcoming discussions at the HYDROVERSE CONVENTION, stakeholders are eager to explore further how materials innovation can accelerate the hydrogen economy [3].