dc.contributor.author | Wan, ChuBin | |
dc.contributor.author | Hu, Weikang | |
dc.contributor.author | Denys, Roman Volodymyrovich | |
dc.contributor.author | Nwakwuo, Christopher | |
dc.contributor.author | Solberg, Jan Ketil | |
dc.contributor.author | Yartys, Volodymyr | |
dc.date.accessioned | 2021-10-22T07:15:01Z | |
dc.date.available | 2021-10-22T07:15:01Z | |
dc.date.created | 2021-04-12T13:38:21Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Journal of Alloys and Compounds. 2021, 856 1-11. | en_US |
dc.identifier.issn | 0925-8388 | |
dc.identifier.uri | https://hdl.handle.net/11250/2824866 | |
dc.description.abstract | The present work is focused on the studies of structure, hydrogen storage and electrochemical properties of the La3-xMgxNi9 (x = 1.0, 1.1 and 1.2) alloys as active materials of negative electrodes in the Nickel-Metal Hydride (Ni/MH) batteries. A change of Mg content affects properties of the studied alloys such as the phase homogeneity, hydrogen storage and electrochemical capacities, cycle stability, and high-rate discharge performance. X-ray diffraction study shows that Mg substitution for La and annealing of the La3-xMgxNi9 alloys promotes the formation of more homogeneous materials, with a predominant formation of the target AB3 PuNi3 structure type intermetallics. The electrodes prepared from the annealed alloys show the maximum discharge capacities of ∼400 mAh g−1 at discharge current density of ∼60 mA/g. The high rate discharge-abilities (HRD) at the discharge current density of 350 mA g−1 keep high values of the remaining reversible discharge capacities, ∼86, 85 and 80%, for the La2MgNi9, La1·9Mg1·1Ni9 and La1·8Mg1·2Ni9 alloy electrodes, respectively. After 200 cycles with 100% depth of discharge (DOD), the La1·9Mg1·1Ni9 alloy electrode exhibits a very good cycling stability with its discharge capacity remaining at a level of ∼64% of its initial capacity. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Effect of Mg content in the La3-xMgxNi9 battery anode alloys on the structural, hydrogen storage and electrochemical properties | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 1-11 | en_US |
dc.source.volume | 856 | en_US |
dc.source.journal | Journal of Alloys and Compounds | en_US |
dc.identifier.doi | 10.1016/j.jallcom.2020.157443 | |
dc.identifier.cristin | 1903541 | |
dc.relation.project | Norges forskningsråd: 203323 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |