A simple, cost-effective sputtering technique is adopted to convert ultra-thin amorphous-carbon into metal-incorporated graphitic micro porous-carbon film and differential resistance measurement depicts its high hydrogen uptake capacity. Average number of graphene layer formation dependents on sputtering parameters (current/voltage/time), which manifest bi-tomulti-layer graphene walls. With increase in graphene layers, hydrogen adsorption increases due to a four-fold effect - higher molecular hydrogen uptake at the graphene layers, more active sites into the microspores, promotion of molecular dissociation into atomic hydrogen by the metal nanoparticles, followed by adsorption at the active surface sites and the formation of hydrogenated carbon via destruction of the π-bonds.
