Borophene as an anode material for Ca, Mg, Na or Li ion storage: A first-principle study

Borophene, the boron atom analogue to graphene, being atomic thick have been just recently experimentally fabricated. In this work, we employ first-principles density functional theory calculations to investigate the interaction of Ca, Mg, Na or Li atoms with single-layer and free-standing borophene...

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Vydáno v:Journal of power sources Ročník 329; s. 456 - 461
Hlavní autoři: Mortazavi, Bohayra, Dianat, Arezoo, Rahaman, Obaidur, Cuniberti, Gianaurelio, Rabczuk, Timon
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier B.V 15.10.2016
Témata:
2D material
Batteries
Borophene
First-principles
Li ions
Modelling
Borophene
Modelling
Batteries
2D material
Li ions
First-principles
ISSN:0378-7753, 1873-2755
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Shrnutí:Borophene, the boron atom analogue to graphene, being atomic thick have been just recently experimentally fabricated. In this work, we employ first-principles density functional theory calculations to investigate the interaction of Ca, Mg, Na or Li atoms with single-layer and free-standing borophene. We first identified the most stable binding sites and their corresponding binding energies as well and then we gradually increased the ions concentration. Our calculations predict strong binding energies of around 4.03 eV, 2.09 eV, 2.92 eV and 3.28 eV between the borophene substrate and Ca, Mg, Na or Li ions, respectively. We found that the binding energy generally decreases by increasing the ions content. Using the Bader charge analysis, we evaluate the charge transfer between the adatoms and the borophene sheet. Our investigation proposes the borophene as a 2D material with a remarkably high capacity of around 800 mA h/g, 1960 mA h/g, 1380 mA h/g and 1720 mA h/g for Ca, Mg, Na or Li ions storage, respectively. This study can be useful for the possible application of borophene for the rechargeable ion batteries. [Display omitted] •We studied the application of borophene for the rechargeable ion batteries.•Borophene presents a remarkably high capacity for Mg, Na or Li ions storage.•Ions diffusion on the borophene are fast with low energy barriers.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2016.08.109