No existing hydrogen storage materials satisfy the Department of Energy's goal for achieving a commercial hydrogen storage system for competitive hydrogen-powered transportation. A key to accelerating the development of such innovative materials is a detailed understanding of elemental stoichiometry and the embedded impurities that may enhance or detract from hydrogen storage capacities. Today's methods of material synthesis generate only test quantities that require rapid chemical and impurity analysis, preferably by nondestructive techniques. Prompt gamma activation analysis (PGAA) and instrumental neutron activation analysis (INAA) are uniquely suitable for the task. PGAA can determine low-Z elements such as H, B, Mg, etc. Determining these elements by any other nondestructive techniques is neither trivial nor reliable. We are developing both PGAA and INAA procedures for accurate characterization of hydrogen storage materials.
Ensuring fair trade
SAE has proposed a Hydrogen Fuel Quality Specification Guideline. Several contaminants, in particular sulfur containing compounds, have been identified that will be detrimental to the performance of the hydrogen cell. NIST has begun the development of standard preparation and analytical methodology for: hydrogen sulfide (H2S); carbonyl sulfide (COS); methyl mercaptan (CH3SH) and ammonia (NH3).
Start Date:October 1, 2006
Lead Organizational Unit:mml
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