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dc.contributor.authorYartys, Volodymyr
dc.contributor.authorDenys, Roman Volodymyrovich
dc.date.accessioned2017-09-26T14:45:12Z
dc.date.available2017-09-26T14:45:12Z
dc.date.created2015-09-17T08:22:17Z
dc.date.issued2014
dc.identifier.citationJournal of Alloys and Compounds. 2015, 645 (1), S412-S418.nb_NO
dc.identifier.issn0925-8388
dc.identifier.urihttp://hdl.handle.net/11250/2456906
dc.description.abstractTernary RE3xMgxNi9 intermetallics are promising battery electrode materials. Studies of the structure– properties relationships in the (La,Pr,Nd)3xMgxNi9H10–13 hydrides and initial intermetallics revealed the following: (a) Increase of magnesium content causes a gradual shrinking of the trigonal unit cells (a, c, V) for all studied RE metals, with the highest solubility range of Mg reached in REMg2Ni9; (b) Significant lowering of the thermodynamic stability follows an increase in magnesium content from x = 1.0 to 1.1–1.2 and a replacement of La by Pr and Nd, with desorption pressures changing in a broad range, from 0.01 bar to 20 bar H2; (c) Neutron powder diffraction shows a nearly equal distribution of D atoms within the REMgNi4 and RENi5 layers; (d) Local hydrogen ordering occurs within the H-sublattice built from MgH6 octahedra and NiH4 tetrahedra displaying a directional metal–hydrogen bonding. A partial substitution of Mg for RE allows the electrochemical discharge capacity of the (La,Pr,Nd)3xMgxNi9 hydrides to become 25% greater than that of the commercial AB5-type electrodes, reaching 400 mA h/g. Synthesis of the materials with a high degree of homogeneity is important and has been achieved by choosing an appropriate synthesis route, content of Mg in the initial mixtures, and time and temperature of the homogenisation process.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleStructure–properties relationship in RE3−xMgxNi9H10–13 (RE = La,Pr,Nd) hydrides for energy storagenb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumberS412-S418nb_NO
dc.source.volume645nb_NO
dc.source.journalJournal of Alloys and Compoundsnb_NO
dc.source.issue1nb_NO
dc.identifier.doi10.1016/j.jallcom.2014.12.091
dc.identifier.cristin1264872
dc.relation.projectNorges forskningsråd: 203323nb_NO
dc.description.localcodeThis is the authors’ accepted and refereed manuscript to the article. Author's post-print is released with a Creative Commons Attribution Non-Commercial No Derivatives License, CC-BY-NC-ND.nb_NO
cristin.unitcode194,66,35,0
cristin.unitnameInstitutt for materialteknologi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal