Synergistic Multiphysical Field Optimization of Magnesium-Based Hydrogen Storage Materials: Mechanisms, Progress, and...

Area of Science:

• Materials Science
• Energy Storage
• Hydrogen Technology

Background:

• Magnesium-based materials, especially magnesium hydride (MgH2), are promising for clean energy storage due to high capacity and resource availability.
• Practical application is hindered by MgH2's high stability, slow kinetics, and high dehydrogenation temperatures.

Purpose of the Study:

• To systematically review research progress and challenges in enhancing MgH2 performance using multi-physics field strategies.
• To explore the synergistic effects of external fields on MgH2 hydrogen storage properties.

Main Methods:

• Review of technological approaches utilizing external fields (magnetic, electric, light, stress) to improve MgH2.
• Analysis of experimental techniques and first-principles computational research on multi-field interactions.
• Focus on modulating electronic structure, phase transitions, and hydrogen diffusion pathways.

Main Results:

• External fields effectively improve hydrogen storage kinetics, thermodynamic properties, and cycling stability of MgH2.
• Multi-field interactions offer deeper insights into performance enhancement mechanisms.
• Synergistic regulation by external fields addresses key limitations of MgH2.

Conclusions:

• Multi-physics field strategies show significant potential for optimizing MgH2 hydrogen storage.
• Integration into practical systems can advance fuel cell vehicles, renewable energy storage, and portable power.
• This approach contributes to developing a sustainable hydrogen economy.