Adsorption technology has been discussed in relation to CNG storage. Here's a study done by the National Renewable Energies Lab on using it with hydrogen storage to increase capacity. The attachment contains the entire text.
PROCEEDINGS OF THE 2000 DOE/NREL HYDROGEN PROGRAM REVIEW
MAY 8-10, 2000
CARBON NANOTUBE MATERIALS FOR HYDROGEN STORAGE
PROCEEDINGS OF THE 2000 DOE/NREL HYDROGEN PROGRAM REVIEW
MAY 8-10, 2000
CARBON NANOTUBE MATERIALS FOR HYDROGEN STORAGE
A.C. Dillon, T. Gennett, J. L. Alleman, K.M. Jones, P.A. Parilla,
and M.J. Heben
National Renewable Energy Laboratory
Golden, CO 80401-3393
and M.J. Heben
National Renewable Energy Laboratory
Golden, CO 80401-3393
Abstract
Carbon single-wall nanotubes (SWNTs) are capable of adsorbing hydrogen quickly, to high
density, at ambient temperatures and pressures. Last year, we showed that hydrogen storage
densities on SWNTs made by laser vaporization ranged from 3.5 to 4.5 wt% after a new cutting
procedure was performed. We present the details of the cutting procedure here and show that,
when optimized, hydrogen storage densities up to 7 wt% can be achieved.
density, at ambient temperatures and pressures. Last year, we showed that hydrogen storage
densities on SWNTs made by laser vaporization ranged from 3.5 to 4.5 wt% after a new cutting
procedure was performed. We present the details of the cutting procedure here and show that,
when optimized, hydrogen storage densities up to 7 wt% can be achieved.