Preparation and characterization of highly porous carbons for hydrogen storage.

In this work, Porous Carbons (PCs) were prepared by using a chemical acid treatment, and the hydrogen storage behaviors of PCs doped by Pt nanoparticles were investigated. The hydrogen storage capacities of the Pt-doped carbons with a platinum content of 0.2-1.5 wt% were evaluated by a volumetric adsorption method at 298 K and 10 MPa. The microstructures of samples were examined by XRD and SEM. It was found that the hydrogen storage capacities of the PCs dramatically increased, but the amount of hydrogen stored from the samples began to decrease after 0.6 wt% of Pt content due to the pore blocking. These results indicate that a suitable amount of supported catalysts and layer intervals of carbons had a very important impact on hydrogen storage behaviors.