High performance of V2O5 thin film electrodes for lithium-ion intercalation

Hevia, Samuel A.; Orive, Joseba; Guzmán, F.; Cisternas, Eduardo; Dietrich, Fabian; Villarroel, Roberto; Lisoni, J. G.

doi:10.1016/j.apsusc.2021.151710

Cited by 11 publications

(5 citation statements)

References 42 publications

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“…The sample fabricated with 200 nm of V and oxidized at 400 °C ( Figure 2 b) exhibits bigger diameter nanostructures with a faceted grain shape. This lamellar growth is consistent with that observed in V 2 O 5 structures [ 11 , 41 ]. In the case of samples oxidized at 500 °C, Figure 2 c,d, the structures do not have a tubular shape and exhibit well-defined faceted grains, with the sample fabricated with 200 nm of V presenting larger grains.…”

Section: Resultssupporting

confidence: 91%

“…The oxidation time was 60 min, using a constant O 2 flow of 100 sccm. The choice of these values arises from the study of the decomposition of the VACNT while vanadium oxide is formed [ 11 , 22 ]. A scheme of the entire synthesis process is shown in Figure 1 .…”

Section: Methodsmentioning

confidence: 99%

“…Then, to obtain V 2 O 5 , the samples were thermally oxidized under an O 2 atmosphere in a horizontal quartz tube furnace at two temperatures: 400 • C and 500 • C. The oxidation time was 60 min, using a constant O 2 flow of 100 sccm. The choice of these values arises from the study of the decomposition of the VACNT while vanadium oxide is formed [11,22]. A scheme of the entire synthesis process is shown in Figure 1.…”

Section: Synthesis Of V 2 O 5 /Vacntsmentioning

confidence: 99%

“…It has an orthorhombic phase with space group Pmmn, composed of a distorted trigonal bipyramidal coordination polyhedral of O atoms surrounding a central V atom. This configuration gives a layered-like structure, which has attracted interest due to its high surface area and the possibility to intercalate ions between the layers [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

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The Synthesis of Sponge-like V2O5/CNT Hybrid Nanostructures Using Vertically Aligned CNTs as Templates

Picuntureo,

García-Merino,

Villarroel

et al. 2024

Nanomaterials

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The fabrication of sponge-like vanadium pentoxide (V2O5) nanostructures using vertically aligned carbon nanotubes (VACNTs) as a template is presented. The VACNTs were grown on silicon substrates by chemical vapor deposition using the Fe/Al bilayer catalyst approach. The V2O5 nanostructures were obtained from the thermal oxidation of metallic vanadium deposited on the VACNTs. Different oxidation temperatures and vanadium thicknesses were used to study the influence of these parameters on the stability of the carbon template and the formation of the V2O5 nanostructures. The morphology of the samples was analyzed by scanning electron microscopy, and the structural characterization was performed by Raman, energy-dispersive X-ray, and X-ray photoelectron spectroscopies. Due to the catalytic properties of V2O5 in the decomposition of carbonaceous materials, it was possible to obtain supported sponge-like structures based on V2O5/CNT composites, in which the CNTs exhibit an increase in their graphitization. The VACNTs can be removed or preserved by modulating the thermal oxidation process and the vanadium thickness.

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Section: Resultssupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Section: Synthesis Of V 2 O 5 /Vacntsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Synthesis of Sponge-like V2O5/CNT Hybrid Nanostructures Using Vertically Aligned CNTs as Templates

Picuntureo,

García-Merino,

Villarroel

et al. 2024

Nanomaterials

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“…With these specific concentrations and model systems, we can avoid the consideration of different permutations of the positions of the Li ions in the V 16 O 40 supercell, as it has been necessary in our former publication describing of the insertion process [37].…”

Section: Resultsmentioning

confidence: 99%

Study on Li ion diffusion in Li_xV₂O₅ using first principle calculations and kinetic Monte Carlo simulations

Dietrich¹,

Cisternas²,

Pasinetti³

et al. 2021

J. Phys. D: Appl. Phys.

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We study the Li diffusion in LixV2O5 (0 < x < 1) - a potential cathode material for Lithium ion batteries. Different diffusion pathways in this material in dependence on the Li ion concentration are investigated by applying first-principles calculations. The results are used to obtain the corresponding diffusion coefficients by employing two complementary methodologies: Kinetic Monte Carlo (KMC) simulations and a statistical thermodynamics approach. The KMC simulations for two different crystal planes give new evidence that the diffusion occurs mainly along the [010] direction, while the corresponding diffusion coefficients show a temperature dependence obeying the Arrhenius' Law. The necessity of the consideration of concentration-dependent barrier heights in the KMC simulations are demonstrated by looking at the significant changes of the concentration-dependence of the diffusion cofficients. The simulated diffusion coefficients of the combined approach show a good quantitative agreement with experimental data reported previously.

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Binder-free hybrid materials based on carbon fibers modified with metal oxides as anode materials for lithium-ion batteries

Khramenkova,

Moshchenko,

Laptii

et al. 2024

Appl. Phys. A

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High performance of V2O5 thin film electrodes for lithium-ion intercalation

Cited by 11 publications

References 42 publications

The Synthesis of Sponge-like V2O5/CNT Hybrid Nanostructures Using Vertically Aligned CNTs as Templates

The Synthesis of Sponge-like V2O5/CNT Hybrid Nanostructures Using Vertically Aligned CNTs as Templates

Study on Li ion diffusion in Li_xV₂O₅ using first principle calculations and kinetic Monte Carlo simulations

Binder-free hybrid materials based on carbon fibers modified with metal oxides as anode materials for lithium-ion batteries

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High performance of V2O5 thin film electrodes for lithium-ion intercalation

Cited by 11 publications

References 42 publications

The Synthesis of Sponge-like V2O5/CNT Hybrid Nanostructures Using Vertically Aligned CNTs as Templates

The Synthesis of Sponge-like V2O5/CNT Hybrid Nanostructures Using Vertically Aligned CNTs as Templates

Study on Li ion diffusion in LixV2O5 using first principle calculations and kinetic Monte Carlo simulations

Binder-free hybrid materials based on carbon fibers modified with metal oxides as anode materials for lithium-ion batteries

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Product

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Study on Li ion diffusion in Li_xV₂O₅ using first principle calculations and kinetic Monte Carlo simulations