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Cluster Assembled Silicon-Lithium Nanostructures: A Nanowire Confined Inside a Carbon Nanotube.

ABSTRACT: We computationally explore an alternative to stabilize one-dimensional (1D) silicon-lithium nanowires (NWs). The Li12Si9 Zintl phase exhibits the NW [Li6Si5]∞1 , combined with Y-shaped Si4 structures. Interestingly, this NW could be assembled from the stacking of the Li6Si5 aromatic cluster. The [Li6Si5]∞1 @CNT nanocomposite has been investigated with density functional theory (DFT), including molecular dynamics simulations and electronic structure calculations. We found that van der Waals interaction between Li's and CNT's walls is relevant for stabilizing this hybrid nanocomposite. This work suggests that nanostructured confinement (within CNTs) may be an alternative to stabilize this free NW, cleaning its properties regarding Li12Si9 solid phase, i.e., metallic character, concerning the perturbation provided by their environment in the Li12Si7 compound.

SUBMITTER: Orellana W 

PROVIDER: S-EPMC8633442 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Cluster Assembled Silicon-Lithium Nanostructures: A Nanowire Confined Inside a Carbon Nanotube.

Orellana Walter W   Pino-Rios Ricardo R   Yañez Osvaldo O   Vásquez-Espinal Alejandro A   Peccati Francesca F   Contreras-García Julia J   Cardenas Carlos C   Tiznado William W  

Frontiers in chemistry 20211112

We computationally explore an alternative to stabilize one-dimensional (1D) silicon-lithium nanowires (NWs). The Li<sub>12</sub>Si<sub>9</sub> Zintl phase exhibits the NW [ Li 6 Si 5 ] ∞ 1 , combined with Y-shaped Si<sub>4</sub> structures. Interestingly, this NW could be assembled from the stacking of the Li<sub>6</sub>Si<sub>5</sub> aromatic cluster. The [ Li 6 Si 5 ] ∞ 1 @CNT nanocomposite has been investigated with density functional theory (DFT), including molecular dynami  ...[more]

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