Abstract
Magnesium (Mg)-based materials are promising candidates for hydrogen storage due to the low cost, high hydrogen storage capacity and abundant resources of magnesium for the realization of a hydrogen society. However, the sluggish kinetics and strong stability of the metal-hydrogen bonding of Mg-based materials hinder their application, especially for onboard storage. Many researchers are devoted to overcoming these challenges by numerous methods. Here, this review summarizes some advances in the development of Mg-based hydrogen storage materials related to downsizing and catalysis. In particular, the focus is on how downsizing and catalysts affect the hydrogen storage capacity, kinetics and thermodynamics of Mg-based hydrogen storage materials. Finally, the future development and applications of Mg-based hydrogen storage materials is discussed.
Highlights
In the past few decades, hydrogen energy has drawn a great deal of attention with the increase in the energy crisis and environmental pollution due to massive and long-term depletion of fossil fuels
Mg-based hydrogen storage materials related to the downsizing and catalysts and focus on paper, we present some progress in the development of the Mg-based hydrogen storage materials how downsizing and catalysts could affect the hydrogen storage capacity, kinetics related to the downsizing and catalysts and focus on how downsizing and catalysts could affectand the thermodynamics of hydrogen storage materials
The results showed that the magnesium hydride and halide additive composites present a strong catalytic effect on the magnesium hydride desorption process
Summary
In the past few decades, hydrogen energy has drawn a great deal of attention with the increase in the energy crisis and environmental pollution due to massive and long-term depletion of fossil fuels. Poor volumetric hydrogen density (4.4 MJ/L), high cost of the tank and safety issues have limited the wide application of compressed hydrogen storage technology. Solid-state hydrogen storage is thought to be a promising method due to its relatively high energy density, low cost of containment and safety guarantee. 3 USD/kg), great abundance and high theoretical hydrogenation capacity (7.7 wt %), magnesium and its alloys are thought to be promising candidates for hydrogen storage materials [11,12,13]. In to improve the numerous efforts have been made to enhance the kinetics and destabilize the magnesium hydrogen storage performance of Mg-based materials, numerous efforts have been made to hydride, enhance including downsizing, catalysis, etc.
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