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Enhancement of energy storage capacity of Mg functionalized silicene and silicane under external strain
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
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2014 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 105, no 12, 123903- p.Article in journal (Refereed) Published
Abstract [en]

The electronic structure, stability, and hydrogen storage capacity of strain induced Mg functionalized silicene (SiMg) and silicane (SiHMg) monolayers have been studied by means of van der Waals induced first principles calculations. A drastic increase in the binding energy of Mg adatoms on both the monolayers under the biaxial symmetric strain of 10% ensures the uniform distribution of dopants over the substrates. A significant positive charge on each Mg accumulates a maximum of six H-2 molecules with H-2 storage capacity of 8.10% and 7.95% in case of SiMg and SiHMg, respectively. The average adsorption energy for H-2 molecules has been found ideal for practical H-2 storage materials.

Place, publisher, year, edition, pages
2014. Vol. 105, no 12, 123903- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-237582DOI: 10.1063/1.4896503ISI: 000343004400095OAI: oai:DiVA.org:uu-237582DiVA: diva2:769065
Available from: 2014-12-05 Created: 2014-12-03 Last updated: 2017-12-05Bibliographically approved

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Hussain, TanveerChakraborty, SudipAhuja, Rajeev

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