Nanostructuring of Mg-Based Hydrogen Storage Materials: Recent Advances for Promoting Key Applications

Abstract

Highlights A comprehensive discussion of the recent advances in the nanostructure engineering of Mg-based hydrogen storage materials is presented. The fundamental theories of hydrogen storage in nanostructured Mg-based hydrogen storage materials and their practical applications are reviewed. The challenges and recommendations of current nanostructured hydrogen storage materials are pointed out.

Nanoscale engineering of solid-state materials for boosting hydrogen storage

“…Particle size pertains to the dimensions of individual material particles. 54 The reduction in particle size to the nanoscale leads to a significant increase in their surface area-to-volume ratio, which provides a larger surface area available for hydrogen adsorption and desorption. This increased surface area creates more sites for hydrogen to attach to, leading to higher hydrogen storage capacity.…”

Structural and kinetic adjustments of Zr-based high-entropy alloys with Laves phases by substitution of Mg element

“…In that regard, hydrogen as an energy carrier is considered a potential energy solution owing to its abundant source, cleanliness, renewability and high energy density; however, its storage is still a challenge. 1–3 Compared with high-pressure gaseous hydrogen storage and low-temperature liquefied hydrogen storage, solid-state hydrogen storage has been widely studied owing to its high energy density and safety. 4,5 To date, a variety of solid hydrogen storage materials have been proposed and studied, such as complex hydrides that can store hydrogen at near room temperature, 6–8 Mg-based alloys with high hydrogen storage capacity 9–12 and intermetallic compounds that can reversibly store hydrogen at room temperature.…”

The structural, energetic and dehydrogenation properties of pure and Ti-doped Mg(0001)/MgH2(110) interfaces

“…Among them, MgH 2 , as a light metal hydride, has been extensively investigated due to its low cost and high hydrogen storage capacity (the gravimetric density is 7.6 wt%, and the volumetric density is 110 kg H 2 per m 3 ). 1,2 However, its high dehydrogenation enthalpy (∼76 kJ mol −1 H 2 ) and sluggish absorption/desorption kinetics have been hindering its industrial application. 3…”