Nanostructured Adsorbents for Hydrogen Storage

To meet the DOE goals for hydrogen storage, NREL and our partners have focused development efforts on the use of nanomaterials with hydrogen binding energies between $\sim $4 and 40 kJ/mol. The use of these types of materials enables hydrogen to be reversibly adsorption/desorption with moderate to low temperatures and pressures, and greatly simplifies the refueling/ regeneration process. NREL is investigating multiple approaches to obtain high hydrogen sorption materials with the common goal of determining the underlying mechanisms and applying a fundamental basis to intelligently design advanced materials. NREL will provide detailed hydrogen capacity/performance and reproducible processing information for promising nanostructured materials. This will include detailing the potential for hydrogen storage by nanostructures, the effects of dopants, demonstrate materials with greater than 4 wt{\%} hydrogen uptake, and discuss the potential to develop materials with 9 wt{\%} or more hydrogen storage.