{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T01:52:27Z","timestamp":1790387547589,"version":"4.1.0"},"reference-count":38,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2017,11,24]],"date-time":"2017-11-24T00:00:00Z","timestamp":1511481600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2017,11,24]],"date-time":"2017-11-24T00:00:00Z","timestamp":1511481600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Sci Rep"],"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Lithium-beryllium metal hydrides, which are structurally related to their parent compound, BeH<jats:sub>2<\/jats:sub>, offer the highest hydrogen storage capacity by weight among the metal hydrides (15.93\u2009wt. % of hydrogen for LiBeH<jats:sub>3<\/jats:sub>). Challenging synthesis protocols have precluded conclusive determination of their crystallographic structure to date, but here we analyze directly the hydrogen hopping mechanisms in BeH<jats:sub>2<\/jats:sub> and LiBeH<jats:sub>3<\/jats:sub> using quasielastic neutron scattering, which is especially sensitive to single-particle dynamics of hydrogen. We find that, unlike its parent compound BeH<jats:sub>2<\/jats:sub>, lithium-beryllium hydride LiBeH<jats:sub>3<\/jats:sub> exhibits a sharp increase in hydrogen mobility above 265\u2009K, so dramatic that it can be viewed as melting of hydrogen sublattice. We perform comparative analysis of hydrogen jump mechanisms observed in BeH<jats:sub>2<\/jats:sub> and LiBeH<jats:sub>3<\/jats:sub> over a broad temperature range. As microscopic diffusivity of hydrogen is directly related to its macroscopic kinetics, a transition in LiBeH<jats:sub>3<\/jats:sub> so close to ambient temperature may offer a straightforward and effective mechanism to influence hydrogen uptake and release in this very lightweight hydrogen storage compound.<\/jats:p>","DOI":"10.1038\/s41598-017-16504-0","type":"journal-article","created":{"date-parts":[[2017,11,20]],"date-time":"2017-11-20T11:13:26Z","timestamp":1511176406000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Hydrogen mobility in the lightest reversible metal hydride, LiBeH3"],"prefix":"10.1038","volume":"7","author":[{"given":"Eugene","family":"Mamontov","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1940-4649","authenticated-orcid":false,"given":"Alexander I.","family":"Kolesnikov","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sujatha","family":"Sampath","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeffery L.","family":"Yarger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2017,11,24]]},"reference":[{"key":"16504_CR1","unstructured":"Weast, R. 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M. & Koukaras, E. N. Ab initio theoretical investigation of beryllium and beryllium hydride nanoparticles and nanocrystals with implications for the corresponding infinite systems. Phys. Chem. Chem. Phys. \n                           16, 14172\u201314182, https:\/\/doi.org\/10.1039\/c4cp01587h (2014).","journal-title":"Phys. Chem. Chem. Phys."},{"key":"16504_CR7","doi-asserted-by":"publisher","first-page":"475401","DOI":"10.1088\/0953-8984\/27\/47\/475401","volume":"27","author":"C Pardanaud","year":"2015","unstructured":"Pardanaud, C. et al. Hydrogen retention in beryllium: concentration effect and nanocrystalline growth. J. Phys.: Condens. Matter \n                           27, 475401, https:\/\/doi.org\/10.1088\/0953-8984\/27\/47\/475401 (2015).","journal-title":"J. Phys.: Condens. Matter"},{"key":"16504_CR8","doi-asserted-by":"publisher","first-page":"3218","DOI":"10.1021\/jacs.6b00135","volume":"138","author":"EN Koukaras","year":"2016","unstructured":"Koukaras, E. 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