Growth and characterization of electrodeposited Na0.45VOPO4, 1.58H2O materials

Bououd, S.; Hourch, Abderrahim El; Kacemi, M. El; Guessous, A.; Pradel, Annie; Ribes, M.

doi:10.1016/j.solidstatesciences.2011.08.004

Cited by 5 publications

(12 citation statements)

References 28 publications

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“…Therefore, the TGA data suggest that the annealing step at 200 °C helps to remove most of the excess water from the electrodeposited sample without destroying the crystal structure and morphology. From the EDAX and TGA data of fTCF/VP-200 (Figures c, and S7c), the plausible chemical formula is calculated to be Na 0·76 VOPO 4 ·0.4·H 2 O, which is in line with the previous reports on NVP. , The formation of NVP is further confirmed from the Raman analysis. In the Raman spectra (Figure S9) of fTCF/VP and fTCF/VP-200, the strong peak at 870 cm –1 is assigned to the characteristic VO vibration in NVP .…”

Section: Resultssupporting

confidence: 87%

“…In any case, the obtained interlayer spacing value is relatively low compared to that of VOPO 4 · n H2O, which implies that the inserted Na + ions in NVP serve as the pillar and provide strong electrostatic interaction between the adjacent layers by bringing them closer. 43, 44 The other peaks (Figure a) at the 2θ values of 28.74, 29.83, 32.02, 41.38, and 45.81° correlate to the (023), (030), (131), (140), and (241) diffraction planes of the Na x VOPO 4 · n H 2 O phase . The aforementioned peaks are present in the XRD profile of fTCF/VP (Figure a,b) as well.…”

Section: Resultsmentioning

confidence: 84%

“…It must be noted that the final pH of the precursor solution in the electrodeposition bath plays a critical role in directing the crystal phase and morphology of the electrodeposited material. The detailed mechanism of the Na-ion intercalation is provided in the Supporting Information (eq S1). , Finally, the electrode was subjected to annealing (at 200 °C) under inert conditions to remove the excess water molecules from the crystal structure of the electrodeposited material.…”

Section: Resultsmentioning

confidence: 99%

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Electrodeposited Layered Sodium Vanadyl Phosphate (Na_xVOPO₄·nH₂O) as Cathode Material for Aqueous Rechargeable Zinc Metal Batteries

et al. 2022

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Aqueous rechargeable zinc metal batteries (ARZMBs) present a safer and cost-effective solution for energy storage in stationary applications. However, a major challenge is the lack of suitable cathode materials simultaneously exhibiting high operating voltage and long cycling stability. Herein, we report the polyanionic sodium-intercalated layered vanadyl phosphate [Na x VOPO 4 •nH 2 O (NVP)] as a suitable high-voltage and stable cathode for ARZMBs. This work employs a simpler electrochemical route (electrodeposition) for the synthesis of NVP over functionalized carbon fiber substrates and its application as a binder-free cathode in ARZMBs. The electrodeposited NVP possesses a morphology of vertically aligned well-separated nanosheet bundles resembling a flower. When used as the ARZMB cathode, the NVP electrode delivers a specific discharge capacity of 100 mA h g −1 at 0.033 A g −1 and high cycling stability (98% retention of the initial capacity over 1100 cycles at 0.333 A g −1 ) in a mild aqueous electrolyte with moderate zinc salt concentration. The observed electrochemical performance of NVP is credited to the synergistic effect of unique nanoflower morphology, the pillaring effect offered by the intercalated Na, and the intimate contact of the active material with the carbon fiber network. These factors are favorable for enhancing the transport of the electrolyte ions and electrons and maintaining the structural stability of the electrode during long-term cycling. The NVP electrode could also deliver appreciable performance (a discharge capacity of 73 mA h g −1 and a current density of 0.033 A g −1 ) in quasi-solidstate ARZMB cells employing PVA/Zn(CF 3 SO 3 ) 2 gel electrolyte.

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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

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Electrodeposited Layered Sodium Vanadyl Phosphate (Na_xVOPO₄·nH₂O) as Cathode Material for Aqueous Rechargeable Zinc Metal Batteries

et al. 2022

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“…This is consistent with the literature, where the formation of vanadyl phosphate intercalated with sodium was reported at pH > 1.9. [ 38 ]…”

Section: Resultsmentioning

confidence: 99%

“…This is consistent with the literature, where the formation of vanadyl phosphate intercalated with sodium was reported at pH > 1.9. [38] F I G U R E 1 1 Cu 2p photoelectron spectra registered on the surface of 2017 alloy exposed to 0.…”

Section: Solution Containing Heteropolyoxovanadatesmentioning

confidence: 99%

Corrosion of structural constituents of 2017 aluminium alloy in acidic solutions containing inhibitors

Kwolek

Mrówka‐Nowotnik

Wytrwał-Sarna

2020

Materials & Corrosion

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The objective of this study is to establish the corrosion behaviour of the most important structural constituents of the aluminium alloy 2017 in orthophosphoric acid solutions containing heteropolyoxomolybdate, tungstate and vanadate. These are potential candidates for replacing toxic hexavalent chromium species in stripping solution for anodic coatings. The corrosion rate of the alloy is estimated with linear polarisation method. It decreases from 0.58 mA cm−2 in uninhibited solution to 0.10 mA cm−2 in a solution containing heteropolyoxomolybdate species. Microscopic studies reveal that heteropolyoxomolybdate species inhibit corrosion of the matrix and intermetallic Al15(Fe,Mn)3(Si,Cu)2 but not Mg2Si. Intermetallic Al2Cu remains not corroded. Heteropolyoxotungstate species virtually do not inhibit the corrosion of the alloy. The solution containing vanadium species is not stable with time and the corrosion rate is not determined. Nevertheless, corrosion of the matrix is inhibited, but intermetallics Al15(Fe,Mn)3(Si,Cu)2 together with Mg2Si are dissolved. X‐ray photoelectron spectroscopy is used for examination of a corrosion product precipitated on the surface.

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ChemInform Abstract: Growth and Characterization of Electrodeposited Na_0.45VOPO₄·1.58H₂O Materials.

et al. 2012

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Growth and Characterization of Electrodeposited Na 0.45 VOPO 4 ·1.58H 2 O Materials. -The title compound is prepared by electrochemical oxidation of VOSO4 in 1M H3PO4 solution to produce a deposit onto a Pt electrode (25 or 60°C, pH 1.9-2.0 adjusted with NaOH, 1.5 or 1.7 V vs. SCE). The samples are characterized by XRD, SEM, and IR spectroscopy. The obtained films comprise fine particles and are of high purity. -(BOUOUD, S.; EL HOURCH, A.; EL KACEMI, K.; GUESSOUS, A.; PRADEL*, A.; RIBES, M.; Solid State Sci. 13 (2011) 12, 2090-2095, http://dx.

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Growth and characterization of electrodeposited Na0.45VOPO4, 1.58H2O materials

Cited by 5 publications

References 28 publications

Electrodeposited Layered Sodium Vanadyl Phosphate (Na_xVOPO₄·nH₂O) as Cathode Material for Aqueous Rechargeable Zinc Metal Batteries

Electrodeposited Layered Sodium Vanadyl Phosphate (Na_xVOPO₄·nH₂O) as Cathode Material for Aqueous Rechargeable Zinc Metal Batteries

Corrosion of structural constituents of 2017 aluminium alloy in acidic solutions containing inhibitors

ChemInform Abstract: Growth and Characterization of Electrodeposited Na_0.45VOPO₄·1.58H₂O Materials.

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Growth and characterization of electrodeposited Na0.45VOPO4, 1.58H2O materials

Cited by 5 publications

References 28 publications

Electrodeposited Layered Sodium Vanadyl Phosphate (NaxVOPO4·nH2O) as Cathode Material for Aqueous Rechargeable Zinc Metal Batteries

Electrodeposited Layered Sodium Vanadyl Phosphate (NaxVOPO4·nH2O) as Cathode Material for Aqueous Rechargeable Zinc Metal Batteries

Corrosion of structural constituents of 2017 aluminium alloy in acidic solutions containing inhibitors

ChemInform Abstract: Growth and Characterization of Electrodeposited Na0.45VOPO4·1.58H2O Materials.

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Product

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Electrodeposited Layered Sodium Vanadyl Phosphate (Na_xVOPO₄·nH₂O) as Cathode Material for Aqueous Rechargeable Zinc Metal Batteries

Electrodeposited Layered Sodium Vanadyl Phosphate (Na_xVOPO₄·nH₂O) as Cathode Material for Aqueous Rechargeable Zinc Metal Batteries

ChemInform Abstract: Growth and Characterization of Electrodeposited Na_0.45VOPO₄·1.58H₂O Materials.