Overview of Hydrogen & Fuel Cell Activities - DOE Hydrogen and ...
Overview of Hydrogen & Fuel Cell Activities - DOE Hydrogen and ...
Overview of Hydrogen & Fuel Cell Activities - DOE Hydrogen and ...
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Example for Potential Science<br />
Collaboration: Adsorbents<br />
Weak chemisorption (Spillover) materials have potential to store hydrogen at<br />
ambient temperature, but have poor reproducibility & slow uptake kinetics.<br />
Possible BES Topics<br />
• Surface science studies <strong>of</strong> hydrogen<br />
bonding <strong>and</strong> surface diffusion as a<br />
function <strong>of</strong> surface composition<br />
• Novel techniques to characterize<br />
bonding <strong>of</strong> low concentrations <strong>of</strong><br />
hydrogen atoms on surfaces<br />
• Theoretical modeling <strong>of</strong> hydrogen<br />
surface diffusion kinetics <strong>and</strong><br />
thermodynamics<br />
• Translate observed physisorption<br />
<strong>and</strong>/or chemisorption interactions to<br />
thermodynamic <strong>and</strong> kinetic barriers<br />
• Theoretical modeling <strong>of</strong> possible<br />
reaction mechanisms to improve<br />
kinetics<br />
EERE <strong>Activities</strong><br />
• NREL led task force in FY11<br />
– With 4 defined materials, establish uniform<br />
protocols, conduct round robin synthesis, testing<br />
<strong>and</strong> characterization effort<br />
– Partners in the US, Germany <strong>and</strong> France;<br />
leverages IEA HIA Task 22 <strong>Hydrogen</strong> Storage<br />
expertise<br />
– Not a material development effort; solely<br />
validation, determines likely potential<br />
• Past modeling efforts included<br />
thermodynamic modeling to indicate<br />
when spillover is possible<br />
– Predictive versus observed hydrogen-catalystsubstrate<br />
interactions<br />
– Translate observed physisorption <strong>and</strong>/or<br />
chemisorption interactions to thermodynamic<br />
<strong>and</strong> kinetic barriers<br />
19 | <strong>Fuel</strong> <strong>Cell</strong> Technologies Program Source: US <strong>DOE</strong> 2/24/2011 eere.energy.gov
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