Hydrogen storage by carbon sorption

This research determined experimentally the extent to which carbon sorbents such as activated carbon, carbon black, carbon aerogels, and carbon molecular sieves can augment the capacity of compressed hydrogen gas (CHG) storage systems. These carbon sorbents were tested at ambient temperature(300 K), at acetone-and-dry-ice temperature (190 K), and at liquid-nitrogen temperature (80 K). We concluded that, at the pressures typical of vehicular CHG storage systems (200 bar), only one of the ten carbon sorbents tested could augment the capacity of CHG storage vessels. This improvement was marginal at 190 K and 300 K, and son-existent at 80 K. (C) 1997 International Association for Hydrogen Energy.