![]() This effect favors recombination of isotopes with smaller mass. The positive strain also increases the surface diffusion barrier for adsorbed hydrogen atoms. As a result, an increased hydrogen isotope separation efficiency of Pt and Pd monolayers is expected as compared to bulk Pt and Pd electrodes. The idea is built on the premise that positive strain in a metal monolayer-thin film, induced by epitaxial misfit with a substrate, increases the strength of the adsorbed hydrogen bond in the overpotential region where recombination of hydrogen atoms is the rate determining step in the hydrogen evolution reaction. More broadly, the techniques developed for hydrogen isotope separation can also be applied to a host of other electrolytic isotope separations. These technologies would help to achieve a secure energy future for our Nation while promoting safe nuclear energy implementation and proliferation. Improved separation efficiencies would aid the production of cheaper moderator materials for current fission-type nuclear reactors and provide crucial fuel components for future fusion reactors. The study examines the effects of positive strain in platinum (Pt) and palladium (Pd) monolayer catalysts on the efficiency of electrolytic hydrogen isotope separation in applications such as separation of heavy, deuterated water (D2O) from normal H2O. Primary Place of Performance Congressional District:Ġ1001617DB NSF RESEARCH & RELATED ACTIVITġ605331 Brankovic, Stanko R. Lars Grabow (Co-Principal Investigator). ![]() ![]() ![]()
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