Hydrogen Adsorption Studies on Platinum and Nickel Nanoparticles Decorated Functionalized Hydrogen-Exfoliated Graphene

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Abstract
High-pressure hydrogen storage property of both platinum and nickel nanoparticles decorated functionalized hydrogen exfoliated graphene is investigated using Sieverts apparatus. The hydrogen uptake of Pt/Ni/f-HEG is 1.8 wt% at 2 MPa and 303 K. The hydrogen uptake capacity of Pt/Ni/f-HEG exceeds the physisorption capacity of pristine hydrogen exfoliated graphene. The results imply that the hydrogen storage capacity of Pt/Ni/f-HEG is via spillover mechanism.