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Enhancement of energy storage capacity of Mg functionalized silicene and silicane under external strain
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics. Uppsala University, Sweden.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
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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.
Keyword [en]
Energy storage capacity, External strains, Functionalized, Silicene
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-155800DOI: 10.1063/1.4896503ISI: 000343004400095Scopus ID: 2-s2.0-84908319623OAI: oai:DiVA.org:kth-155800DiVA: diva2:763087
Funder
Carl Tryggers foundation Swedish Research CouncilSwedish Energy Agency
Note

QC 20141113

Available from: 2014-11-13 Created: 2014-11-13 Last updated: 2017-12-05Bibliographically approved

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