Alkali/transition metal decorated borophene in hydrogen storage through adsorption: A review

Abstract

Hydrogen is indeed an exceptional fuel due to its unique properties, including its large energy content by weight, clean burning, and high gross calorific value of 141.9 MJ/kg. It can reduce the serious problem of greenhouse gas exudations by substituting fossil fuels. Currently, there exist diverse methods for stockpiling hydrogen with their own merits and demerits. However, an effective approach is incessantly needed, and the wonder material borophene with extraordinary characteristics can provide it. This review informs the utilization of borophene in hydrogen storage through analysis of multiple computational studies on alkali or transition metal-decorated borophene employing density functional theory. It also encompasses the experimental synthesis of borophene and discusses US Department of Energy (DOE) standards and previously used adsorbent materials. Additionally, required improvements for effective hydrogen fuel-based transportation and safety precautions while stockpiling hydrogen are addressed.

Keywords

• Borophene
• Hydrogen storage
• Adsorption
• Metal decoration
• Density functional theory