Facile production of highly porous graphitic nanosheets for enhanced hydrogen storage

초록

Graphitic nanosheets as a two-dimensional material are renowned an ideal candidate for efficient adsorbents due to their rapid adsorption kinetics and superior capacity. This study presents a facile method to develop highly porous graphitic nanosheets (PGNs) from converted carbon blacks (CBs) for hydrogen (H-2) storage. The CBs, containing interconnected amorphous and graphitic domains, allows the introduction of numerous H-2-friendly adsorption sites during PGNs production. The resulting PGNs show large sheets of 3-5 mu m and thicknesses of similar to 2.5 nm, boasting a remarkable specific surface area of 2,644 m(2)/g with significant total H-2 storage capacities of 11.5 wt% (3.8 kWh kg(-1) @ 77 K) and 2.6 wt% (0.87 kWh kg(-1), @ 298 K) at 60 bar. This research introduces a promising strategy to enhance PGNs's H-2 storage capabilities, paving the way for diverse energy-related fields.

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