Ammonia (NH₃) is emerging as a promising carbon-free fuel for maritime applications due to its high energy density and existing infrastructure. Direct ammonia fuel cells (DAFCs) offer an efficient pathway for onboard electricity generation; however, challenges such as slow reaction kinetics and catalyst stability remain. In this work, we explore metal- and metal oxide-based nanomaterials integrated with graphene oxide (GO) and reduced graphene oxide (rGO) as electrocatalysts for ammonia oxidation. The materials are synthesized using scalable methods and characterized structurally using X-ray diffraction (XRD). Electrochemical studies demonstrate improved catalytic activity and enhanced charge transport due to the synergistic effect of metal-based components and conductive carbon frameworks. These findings highlight the potential of engineered nanocomposites to advance DAFC technology for sustainable maritime energy systems.