Hydrogen retention in lithium and lithium oxide films

Buzi, L.; Yang, Y.; Domínguez-Gutiérrez, F. J.; Nelson, A. O.; Hofman, M.; Krstić, P. S.; Kaita, R.; Koel, B. E.

doi:10.1016/j.jnucmat.2018.02.010

Title: Hydrogen retention in lithium and lithium oxide films

Journal Article · Thu Feb 08 00:00:00 EST 2018 · Journal of Nuclear Materials

DOI:https://doi.org/10.1016/j.jnucmat.2018.02.010· OSTI ID:1571881

Buzi, L. ^[1]; Yang, Y. ^[1]; Domínguez-Gutiérrez, F. J. ^[2]; Nelson, A. O. ^[3]; Hofman, M. ^[4]; Krstić, P. S. ^[2]; Kaita, R. ^[3]; Koel, B. E. ^[1]

Princeton Univ., NJ (United States). Dept. of Chemical and Biological Engineering
Stony Brook Univ., NY (United States). Inst. for Advanced Computational Science
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Princeton Univ., NJ (United States). Dept. of Chemistry

Pure lithium (Li) surfaces are difficult to maintain in fusion devices due to rapid oxide formation, therefore, parameterizing and understanding the mechanisms of hydrogen (H, D) retention in lithium oxide (Li₂O) in addition to pure Li is crucial for Li plasma-facing material applications. To compare H retention in Li and Li₂O films, measurements were made as a function of surface temperature (90–520 K) under ultrahigh vacuum (UHV) conditions using temperature programmed desorption (TPD). In both cases, the total retention dropped with surface temperature, from 95% at 90 K to 35% at 520 K Li₂O films retained H in similar amounts as pure Li. Finally, Molecular Dynamics (MD) modeling was used to elucidate the mechanisms of H retention, and results were consistent with experiments in terms of both retention fraction and the drop of retention with temperature.

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Research Organization:: Princeton Univ., NJ (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES); National Council of Science and Technology, Mexico

Grant/Contract Number:: SC0012890; SC0013752

OSTI ID:: 1571881

Alternate ID(s):: OSTI ID: 1432058; OSTI ID: 1548741

Report Number(s):: DOE-PU-0012890-3; TRN: US2001301

Journal Information:: Journal of Nuclear Materials, Vol. 502, Issue C; ISSN 0022-3115

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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