2026-04-23T00:08:29Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/48342024-07-24T11:37:27Zcom_10259_9476com_10259.4_106com_10259_2604col_10259_9477

Senes, Nina . 998544c8-8fbb-4ce4-be07-5edcaae06379 500 Fernández Albanesi, Luisa . 264e153c-795f-4368-b521-2728581c305e 500 Garroni, Sebastiano 227 500 0000-0001-7686-6589 Santoru, Antonio . d0deba34-2464-48bc-8e5a-5b07c444c09b 500 Pistidda, Claudio . 2b5f1855-5ceb-482b-9291-4120c01bd6f7 500 Mulas, Gabriele aa63a411-6065-4d48-ad42-59458297698d 500 Enzo, Stefano 04219dc4-84cf-43cd-908e-e9295dcdfc28 500 Gennari, Fabiana C. 55015863-11d7-4f6e-91b3-192acdc88c9a 500 2018-07-03T11:37:37Z 2018-10 2020-10 0925-8388 http://hdl.handle.net/10259/4834 10.1016/j.jallcom.2018.06.262 Recent investigations showed the formation of new amide-chloride phases between LiNH2 and AlCl3 after milling and/or heating under hydrogen pressure. These phases exhibited a key role in the improvement of the hydrogen storage properties of the LiNH2-LiH composite. In the present work, we studied the effects of Al and AlCl3 additives on the hydrogen storage behavior of the Li-Mg-N-H system. The dehydrogenation kinetics and the reaction pathway of Al and AlCl3 modified LiNH2-MgH2 composite were investigated through a combination of kinetic measurements and structural analyses. During the first cycle, the addition of Al catalytically accelerates the hydrogen release at 200 °C. In the subsequent cycles, the formation of a new phase of unknown nature is probably responsible for both increased equilibrium hydrogen pressure and decreased dehydrogenation rate. In contrast, AlCl3 additive reacts with LiNH2-MgH2 through the milling and continues during heating under hydrogen pressure. Addition of AlCl3 leads to the formation of two cubic structures identified in the Li-Al-N-H-Cl system, which improves dehydrogenation rate by modifying the thermodynamic stability of the material. This study evidences positive effect of cation and/or anion substitution on hydrogen storage properties of the Li-Mg-N-H system. This study has been partially supported by bilateral collaboration Project MINCyT-MAE. application/pdf eng Elsevier Journal of Alloys and Compounds. 2018, V. 765, p. 635–643 https://doi.org/10.1016/j.jallcom.2018.06.262 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Hydrogen absorbing materials Mechanochemical processing Kinetics Diffusion Crystal structure Materia-Composición Matter-Constitution Kinetics and hydrogen storage performance of Li-Mg-N-H systems doped with Al and AlCl3 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/4834/8/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 8 THUMBNAIL Senes-JAC_2018.pdf.jpg Senes-JAC_2018.pdf.jpg IM Thumbnail image/jpeg 4305 https://riubu.ubu.es/bitstream/10259/4834/7/Senes-JAC_2018.pdf.jpg bf8e8b130e963dbd876c2ae9844a391a MD5 7 ORIGINAL Senes-JAC_2018.pdf Senes-JAC_2018.pdf application/pdf 2030975 https://riubu.ubu.es/bitstream/10259/4834/1/Senes-JAC_2018.pdf 5dd8e93e5b7fb4f99ae2fc4d2a95c97b MD5 1 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/4834/5/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 5 TEXT Senes-JAC_2018.pdf.txt Senes-JAC_2018.pdf.txt Extracted text text/plain 49445 https://riubu.ubu.es/bitstream/10259/4834/6/Senes-JAC_2018.pdf.txt acd19fbb1dbc0f282b3b9eafa0f72425 MD5 6 10259/4834 oai:riubu.ubu.es:10259/4834 2024-07-24 13:37:27.744 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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