HYDROGEN STORAGE BY CARBON SORPTION

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