Antimonene: Mechanical Isolation of Highly Stable Antimonene under Ambient Conditions (Adv. Mater. 30/2016)

Ares, Pablo; Aguilar-Galindo, Fernando; Rodríguez‐San‐Miguel, David; Aldave, Diego A.; Díaz‐Tendero, Sergio; Alcamı́, Manuel; Martín, Fernando; Gómez-Herrero, Júlio; Zamora, Félix

doi:10.1002/adma.201670209

Cited by 26 publications

(25 citation statements)

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“…This should be ascribed to the lower layered space of bulk Sb (0.184 nm) than those of graphite (0.334 nm) and MoS 2 (0.384), which make it more difficult to be exfoliated. [15b] As far as we know, this is the first time to realize the exfoliation of metallic materials via a liquid‐phase exfoliation approach.…”

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confidence: 99%

Liquid‐Phase Exfoliated Metallic Antimony Nanosheets toward High Volumetric Sodium Storage

Zhang

et al. 2017

Advanced Energy Materials

182

165

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Unfortunately, the volume changes of such metals and metal oxides during sodiation/desodiation processes are more severe than those during lithiation/delithiation processes, resulting in a large loss of electric contact and eventually rapid capacity decay. [7d,10a] To circumvent above volume change issues of metals and metal oxides during sodiation/desodiation processes, various metal (oxide)-carbon nanocomposites such as Sb/carbon fibers, [7d,11] Sb/ porous carbons, [12] and Sb 2 O 3 /Sb@graphene architectures [13] have been recently designed and fabricated via various chemical approaches and demonstrated improved gravimetric capacities, cycle performances, and high-rate capabilities. Although it has been a great achievement, these metal (oxide)/carbon nanocomposites commonly show very low volumetric capacities (100-350 mAh cm −3 ), [14] largely hampering the development, and practical applications of sodium ion batteries.Different from other metals, metallic Sb with gray allotrope (R3m space group) has rarely been considered from the viewpoint of 2D layered system is actually a graphite-like layered material, in which Sb layers consist of fused, ruffled, six-membered rings; [15] the nearest and next-nearest Sb atoms form an irregular octahedral complex, with three atoms in each double layer slightly closer than the three atoms in the next. Such close packing generates a high density of 6.7 g cm −3 for gray Sb, [15b] and the weak bonding between the layers enable to be a potential candidate for the top-down fabrication of Sb nanosheets. Given that metallic Sb nanosheets can be played like graphene, it would be anticipated to obtain a new anode material with superior electrochemical performances for sodium storage.In this work, we propose an efficient strategy to fabricate free-standing metallic Sb nanosheets via liquid-phase exfoliation of gray Sb powder in an isopropyle alcohol (IPA) solution with a constant concentration of sodium hydroxide. Remarkably, the resultant metallic Sb nanosheets have ultrathin (≈4 nm), foldable features and large aspect ratios. Such unique features render metallic Sb nanosheets behaving like graphene and enable to construct uniform and compacted films with other nanosheets. As a proof of the concept, several hybrid films composed of metallic Sb nanosheets and graphene with tunable densities are achieved, in which the notorious volume change of metallic Sb can be efficiently alleviated with the aid of Metallic antimony (Sb) with gray allotrope has rarely been considered from the viewpoint of two-dimension layered system is actually a graphite-like material, in which Sb layers consist of fused, ruffled, and six-membered rings. Given that metallic Sb nanosheets can be played like graphene, it would be anticipated to obtain a new anode material with superior electrochemical performances for sodium storage. In this work, we propose an efficient strategy to fabricate free-standing metallic Sb nanosheets via liquid-phase exfoliation of gray Sb powder in an ios-propyle alcohol (IPA) so...

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confidence: 99%

Liquid‐Phase Exfoliated Metallic Antimony Nanosheets toward High Volumetric Sodium Storage

Zhang

et al. 2017

Advanced Energy Materials

182

165

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“…More importantly, antimonene under large tensile strain is particularly interesting because it is proposed to be a great candidate for high-temperature quantum spin Hall (QSH) material because of its strong spin-orbital coupling (SOC) effect [8], which is very similar to that of recently discovered bismuthene grown on SiC [9]. Recently, few-layer antimonene has been synthesized by exfoliation [10,11] and epitaxial growth on mica [12], PdTe2 [13], and germanium surfaces [14]. However, antimonene layers grown on these substrates bear very small tensile strain because these substrates are either van der Waals layered materials or surfaces with a highly matched lattice constant.…”

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confidence: 99%

Epitaxial growth of highly strained antimonene on Ag(111)

et al. 2018

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The synthesis of antimonene, which is a promising group-V 2D material for both fundamental studies and technological applications, remains highly challenging. Thus far, it has been synthesized only by exfoliation or growth on a few substrates. In this study, we show that thin layers of antimonene can be grown on Ag (111) by molecular beam epitaxy. High-resolution scanning tunneling microscopy combined with theoretical calculations revealed that the submonolayer Sb deposited on a Ag (111) surface forms a layer of AgSb2 surface alloy upon annealing. Further deposition of Sb on the AgSb2 surface alloy causes an epitaxial layer of Sb to form, which is identified as antimonene with a buckled honeycomb structure. More interestingly, the lattice constant of the epitaxial antimonene (5 Å) is much larger than that of freestanding antimonene, indicating a high tensile strain of more than 20%. This kind of large strain is expected to make the antimonene a highly promising candidate for room-temperature quantum spin Hall material.

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“…The first experimental realizations of 2D antimony, namely, antimonene, were obtained by micromechanical and liquid exfoliation . So far, the epitaxial growth of antimonene has been reported on Bi 2 Te 3 and Sb 2 Te 3 , PdTe 2 , Ge(111), Ag(111), Pb(111), Cu(111), and Cu(110) .…”

Section: Xenes: Second Generationmentioning

confidence: 99%

“…Theoretical works predict a variety of appealing physical–chemical properties of antimonene, including tunable electronic bandgap, low thermal conductance and electrical resistivity, and nontrivial topological features . These findings, together with an extremely high environmental stability, make antimonene one of the most promising second‐generation Xenes in a wealth of technological applications, including photonics, electronics, and sodium‐ion batteries. …”

Section: Xenes: Second Generationmentioning

confidence: 99%

The Xenes Generations: A Taxonomy of Epitaxial Single‐Element 2D Materials

Grazianetti

Martella

Molle

2019

Physica Rapid Research Ltrs

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Xenes are two‐dimensional monoelemental materials beyond graphene ranging from silicene through borophene and to tellurene. Allessandro Molle and co‐workers (article number http://doi.wiley.com/10.1002/pssr.201900439) review the rise of the Xenes and classify them in two generations from its early stage up to now. The attention is specifically paid to the epitaxial methodologies for the Xene synthesis approaches and to key‐characteristics, like scalability, quality, and stability, which enable the Xenes integration into diverse nanotechnology platforms.

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Antimonene: Mechanical Isolation of Highly Stable Antimonene under Ambient Conditions (Adv. Mater. 30/2016)

Cited by 26 publications

References 0 publications

Liquid‐Phase Exfoliated Metallic Antimony Nanosheets toward High Volumetric Sodium Storage

Liquid‐Phase Exfoliated Metallic Antimony Nanosheets toward High Volumetric Sodium Storage

Epitaxial growth of highly strained antimonene on Ag(111)

The Xenes Generations: A Taxonomy of Epitaxial Single‐Element 2D Materials

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