Developing Two-dimensional Graphene for Hydrogen Storage Application

Abstract

The two-dimensional materials like graphene, molybdenum disulfide (MoS₂), and MXene are extensively tested for hydrogen storage applications. However, due to strong covalent bond these materials mostly allow physisorption of hydrogen. Recently, the defect-engineering have been utilized to modify the strength of bonding of hydrogen with the two-dimensional (2D) graphene. By creating vacancies, doping with boron or nitrogen atoms, or inducing strain, researchers can significantly alter the electrical, optical, and mechanical characteristics of 2D materials.These controlled defects can enhance conductivity andincrease the hydrogen storage capacity of the graphene. In this paper, we review the effects of various native defects on the hydrogen storage capacity of the 2D graphene. Indeed, atomic level precision of defect engineering enables the graphene to become a good hydrogen storage medium.