2022 Annual Meeting
Hydrogen Storage Properties of Graphene-Based Materials Obtained By Wet Chemical Methods
Hydrogen has the potential to become one of the main energy-carrier resources of the future. However, it still faces significant barriers to becoming widely adopted, particularly in storage and transport. As such, research on the hydrogen storage capacity of solid materials is in high demand. The DOE has outlined technical targets for material properties of a hydrogen storage material which would be economically feasible for use in light duty vehicles. Some of the notable goals to meet include a 6.5 wt% usable storage capacity, an operating temperature between -40 and 60 °C, and a delivery pressure between 5 and 12 bars. Although graphene-based materials have been investigated for hydrogen storage in the past, no material has yet to meet the DOE standards. Few studies investigate hydrogen storage properties of metal-decorated and heteroatom doped graphene, despite some theoretical studies stating that aluminum adsorbed graphene could have a gravimetric capacity as high as 13.79 wt%. This study aims to further investigate graphene-based materials for hydrogen storage. We synthesize N-doped graphene and metal-decorated graphene by hydrothermal methods, and perform material characterization using XRD, SEM, and TEM. Hydrogen storage capacity of these materials will be measured by the volumetric method using a Sievertâs like apparatus, at moderate temperatures and pressures.