Preparation and characterization of colloidal dispersions of layered niobium chalcogenides

Artemkina, S. B.; Podlipskaya, T. Yu.; Булавченко, А. И.; Komonov, A. I.; Mironov, Yuri V.; Fedorov, V. E.

doi:10.1016/j.colsurfa.2014.07.021

Cited by 26 publications

(8 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The UV–vis spectra in Figure a indicate a weak absorbance spectrum with no prominent peaks for the exfoliated NbSe 2 samples independent of concentration. Metallic NbSe 2 requires little energy in d–d transition indicated by no visible absorption in the spectrum after exfoliation, which is in agreement with the previous reports . Zhou et al reported that liquid-phase exfoliated NbSe 2 flakes show a reduction in size upon increment in centrifuge speed, while also demonstrating a size-independent nonlinear optical property indicating a fast charge-transfer process at 2D NbSe 2 which is also consistent with our spectra .…”

Section: Resultssupporting

confidence: 93%

Effects of Impurities on the Electrochemical Characterization of Liquid-Phase Exfoliated Niobium Diselenide Nanosheets

et al. 2019

View full text Add to dashboard Cite

Commercially available bulk niobium diselenide (NbSe2) reduced into nanomaterials upon exfoliation typically contains oxide and carbide impurities. Liquid-phase exfoliated two-dimensional (2D) nanosheets of NbSe2 obtained from bulk powders provide high charge mobility and large surface area but become self-passivated and chemically inert as the presence of oxide impurities makes them behave more semimetallic. In this article, we report the effects of inherent impurities of liquid-phase exfoliated 2D NbSe2 (intended to be integrated as supercapacitor electrodes) on the electrochemical performance. The highest specific capacitances achieved using 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6) and sulfuric acid (1 M H2SO4) electrolytes were 4955.5 ± 21.5 and 13 361.6 ± 31.8% mF/cm2, respectively, which were affected by the impurities, oxophilicity of niobium defects, and moisture adsorption in the cell. Galvanostatic charge–discharge profiles show moisture adsorption affecting the high-energy charging procedure in the cell for BMIMPF6, resulting in leakage and decomposition of the electrolyte. Electrochemical impedance spectroscopy provides insights into the solid-electrolyte interphase and charge-transfer mechanisms at exfoliated 2D NbSe2 nanosheets, which affect the ion intercalation through heterogenous phases of the nanosheets. Overall, the NbSe2 nanosheets offer heterogenous phases because of the coexistence of Nb2O5 that influences the charge-transfer mechanism at the exfoliated surfaces.

show abstract

Section: Resultssupporting

confidence: 93%

Effects of Impurities on the Electrochemical Characterization of Liquid-Phase Exfoliated Niobium Diselenide Nanosheets

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Further colloidal dispersions have been achieved for TaS3 in MeCN and DMSO 142 , and for NbS3 and NbSe3. 143,144 Figure 5 …”

Section: Isolation and Exfoliation Of Mx3 Crystalsmentioning

confidence: 99%

Electronics and optoelectronics of quasi-1D layered transition metal trichalcogenides

et al. 2017

View full text Add to dashboard Cite

The isolation of graphene and transition metal dichalcongenides has opened a veritable world to a great number of layered materials which can be exfoliated, manipulated, and stacked or combined at will. With continued explorations expanding to include other layered materials with unique attributes, it is becoming clear that no one material will fill all the post-silicon era requirements. Here we review the properties and applications of layered, quasi-one dimensional transition metal trichalcogenides (TMTCs) as novel materials for next generation electronics and optoelectronics. The TMTCs present a unique chain-like structure which gives the materials their quasi-one dimensional properties such as high anisotropy ratios in conductivity and linear dichroism. The range of band gaps spanned by this class of materials (0.2 eV-2 eV) makes them suitable for a wide variety of applications including field-effect transistors, infrared, visible and ultraviolet photodetectors, and unique applications related to their anisotropic properties which opens another degree of freedom in the development of next generation electronics. In this review we survey the historical development of these remarkable materials with an emphasis on the recent activity generated by the isolation and characterization of atomically thin titanium trisulfide (TiS3).

show abstract

“…The layers are closely packed and the arrangement of up to 6 layered structures has been reported. 23 The weak van der Waals forces are responsible for the easy sliding of the layers relative to one another, thus providing a favourable matrix for intercalation reactions and exfoliation. 24 The coordination around the Nb atom can either be a distorted octahedral or trigonal prismatic.…”

Section: Resultsmentioning

confidence: 99%

“… 24 The coordination around the Nb atom can either be a distorted octahedral or trigonal prismatic. 23 On the other hand, Nb 2 Se 9 is a new 1D material made up of periodically stacked single-chain atomic crystals, which form the inorganic bulk of the crystals due to strong covalent bonds within the chain and weak van der Waals interaction between the chains, as shown in Fig. 2 .…”

Section: Resultsmentioning

confidence: 99%

The effect of the metal and selenium precursors on the properties of NbSe₂and Nb₂Se₉nanostructures and their application in dye-sensitized solar cells

et al. 2021

View full text Add to dashboard Cite

show abstract

Preparation and characterization of colloidal dispersions of layered niobium chalcogenides

Cited by 26 publications

References 28 publications

Effects of Impurities on the Electrochemical Characterization of Liquid-Phase Exfoliated Niobium Diselenide Nanosheets

Effects of Impurities on the Electrochemical Characterization of Liquid-Phase Exfoliated Niobium Diselenide Nanosheets

Electronics and optoelectronics of quasi-1D layered transition metal trichalcogenides

The effect of the metal and selenium precursors on the properties of NbSe₂and Nb₂Se₉nanostructures and their application in dye-sensitized solar cells

Contact Info

Product

Resources

About

Preparation and characterization of colloidal dispersions of layered niobium chalcogenides

Cited by 26 publications

References 28 publications

Effects of Impurities on the Electrochemical Characterization of Liquid-Phase Exfoliated Niobium Diselenide Nanosheets

Effects of Impurities on the Electrochemical Characterization of Liquid-Phase Exfoliated Niobium Diselenide Nanosheets

Electronics and optoelectronics of quasi-1D layered transition metal trichalcogenides

The effect of the metal and selenium precursors on the properties of NbSe2and Nb2Se9nanostructures and their application in dye-sensitized solar cells

Contact Info

Product

Resources

About

The effect of the metal and selenium precursors on the properties of NbSe₂and Nb₂Se₉nanostructures and their application in dye-sensitized solar cells