Vanadium Pentoxide Research Articles

Revealing the role of calcium ion intercalation of hydrated vanadium oxides for aqueous zinc-ion batteries

Exploring suitable high-capacity V2O5-based cathode materials is essential for the rapid advancement of aqueous zinc ion batteries (ZIBs). However, the typical problem of slow Zn2+ diffusion kinetics has severely limited the feasibility of such materials. In this work, unique hydrated vanadates (CaVO, BaVO) were obtained by intercalation of Ca2+ or Ba2+ into hydrated vanadium pentoxide. In the CaVO//Zn and BaVO//Zn batteries systems, the former delivered up to a 489.8 mAh g−1 discharge specific capacity at 0.1 A g−1. Moreover, the remarkable energy density of 370.07 Wh kg−1 and favorable cycling stability yard outperform BaVO, pure V2O5, and many reported cathodes of similar ionic intercalation compounds. In addition, pseudocapacitance analysis, galvanostatic intermittent titration (GITT) tests, and Trasatti analysis revealed the high capacitance contribution and Zn2+ diffusion coefficient of CaVO, while an in-depth investigation based on EIS elucidated the reasons for the better electrochemical performance of CaVO. Notably, ex-situ XRD, XPS, and TEM tests further demonstrated the Zn2+ insertion/extraction and Zn-storage mechanism that occurred during the cycle in the CaVO//Zn battery system. This work provides new insights into the intercalation of similar divalent cations in vanadium oxides and offers new solutions for designing cathodes for high-capacity aqueous ZIBs.

Формирование наноструктур из поликристаллических пленок диоксида ванадия с помощью сканирующей зондовой литографии

Vanadium dioxide (VO2) undergoes a reversible first-order metal-insulator phase transition near room temperature, accompanied by a structural phase transition. This causes a significant change in its electrical and optical properties, making it useful for practical applications. VO2-based nanostructures exhibit notable mechanical resistance to structural transition caused by their small size and demonstrate vivid properties during the phase transition. Obtaining VO2 nanostructures is an extremely demanded objective. This research study presents the use of scanning probe lithography techniques to fabricate nanostructures on polycrystalline VO2 films. The present study focuses on the modification of VO2 films when a positive bias is applied to the sample. The effect of the value and duration of the applied voltage, relative humidity on the quality of the formed nanolithographic pattern was analyzed. The oxidation mechanism was determined. It was found that as a result of local anodic oxidation the formed oxide structures consisting of vanadium penta-oxide (V2O5) completely dissolve in water. This process leads to the separation of the continuous polycrystalline VO2 film into individual nanostructures with precise dimensions. The presented method of forming nanostructures from crystalline VO2 films is promising for nanophotonics and nanoelectronics.

Fabrication of nano filler doped PVA/starch biodegradable composites with enhanced thermal conduction, water barrier and antimicrobial performance for food industry

In this work there was investigated the synergistic effect of the nanomaterials-the Montmorillonite (MMT) and the vanadium pentoxide (V2O5) on the polyvinyl alcohol (PVA)/starch composite. The composite films were prepared by the solvent casting method. The characterization of the composites showed that the addition of the MMT and the V2O5 to PVA/starch composite decreased the water solubility and water absorption capacity of the film. Both of the reinforcement materials enriched values of thermal conductivity and thermal stability of the composite. The TG/DTA and universal testing machine (UTM) analysis exhibited that MMT and V2O5 augmented the thermal robustness and tensile strength of composites and decreased the strain to break. It was also observed that greater MMT concentration accelerates mechanical strength deterioration of the film owing to agglomeration. The scanning electron microscopy (SEM) analysis reflected great change in the surface morphology of the films in the presence and absence of MMT and V2O5. This was due to the interaction amid constituents of the composite. The chemical interaction between the PVA, Starch, MMT and the V2O5 was also established via Fourier-transform infrared spectroscopy (FTIR) analysis, which revealed fluctuations in the absorbance position and intensity of the PVA/Starch. Antimicrobial activities against seven different cultures of bacteria (both-gram positive and -negative) and one fungus (Candida albicans), exposed that antimicrobial performance of the PVA amplified upon addition of the starch, MMT and V2O5, making these composites prospective candidates for the biodegradable packaging materials.

Hot corrosion resistance of oxide‐doped yttria‐stabilized zirconia powder in V2O5 molten salt

AbstractThe hot corrosion resistance of 8 wt.% yttria‐stabilized zirconia (8YSZ) powder, modified with CaO, MgO, Ta2O5, and TiO2 at concentrations of 5, 10, and 15 wt.%, was systematically investigated in a molten vanadium pentoxide (V2O5) environment at 900°C and 1100°C for 48 h. The modified 8YSZ samples, coated with V2O5, underwent thermal cycling totaling 12 cycles. Results revealed susceptibility to hot corrosion for all doped 8YSZ powders, attributed to tetragonal ZrO2 destabilization, forming monoclinic ZrO2. Remarkably, 8YSZ/CaO demonstrated exceptional resistance to hot corrosion when exposed to a temperature of 900°C. The corrosion product found in the 8YSZ/Ta2O5 material was determined to be tetragonal Zr0.66Y0.17Ta0.17O2. Although, 8YSZ/TiO2 undergoes deterioration at 900°C, it exhibits improved resistance at 1100°C, resulting in the formation of TiVO4.

Evaluation of sensitivity of Extended Gate Field Effect Transistor -biosensor based on V2O5/GOx for glucose detection

The sensing modified electrode was prepared using glucose oxidase immobilized onto vanadium pentoxide xerogel with glass/FTO as support electrode to evaluate the possibility to construct a V2O5/GOx Extended Gate Field Effect Transistor biosensor. Previously, our studies exhibited a sensitivity of V2O5 of 58.1 mV/pH. The use of Nafion® onto V2O5/GOx caused a decrease of mass loss after several cycles compared to the modified electrode without Nafion® during the EQCM and cyclic voltammetrics studies. Electrical characterization of V2O5/GOx demonstrated a tendency to stability after 200 s as a function of applied current. In presence of glucose and in different pH, the current decreased when the glucose concentration increased due to the lower active sites of enzyme. After ten voltammetric cycles, the total charge tends to structural stability. In pH = 5.0, the modified electrode based on V2O5/GOx Extended Gate Field Effect Transistor presented more tendency to sensitivity in different concentration of glucose.

Energy on-the-go: V2O5-pBOA-Graphene nanocomposite for wearable supercapacitor applications

The emerging field of wearable electronic devices has propelled the demand for advanced energy storage solutions. Among these, wearable supercapacitors have garnered significant attention due to their intrinsic advantages, including high stability, rapid charging discharging capabilities, and cost-effectiveness. This paper unveils the latest strides in flexible and wearable supercapacitors, placing a spotlight on the exceptional performance of a novel V2O5-pBOA-Graphene nanocomposite. Synthesized through a straightforward chemical approach, the material is meticulously characterized using X-ray diffraction, scanning electron microscopy, cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. The electrochemical behavior of the fabricated wearable supercapacitor devices is scrutinized, revealing an outstanding specific capacitance of 986 Fg−1 in a two-electrode system, coupled with an impressive energy density of 49 Whkg−1. The nanocomposite's robust cycling stability is showcased, with a capacitance retention of 93.47 % over 2000 cycles. Moreover, the device's flexibility is assessed by bending it at various angles, and it retains more than 91 % capacitance even at a 90° angle, underscoring its suitability for wearable applications. The choice of electrode materials, encompassing vanadium pentoxide (V2O5), poly benzoxazole aniline (pBOA), and graphene, synergistically contributes to the nanocomposite's remarkable electrochemical performance. V2O5, with its pseudocapacitive behavior, is complemented by the conductivity and mechanical stability offered by pBOA and graphene. The ternary V2O5-pBOA-Graphene nanocomposite emerges as a frontrunner for wearable supercapacitor applications, promising enhanced flexibility, efficiency, and practical utility in real-world scenarios. The findings underscore the potential of the V2O5-pBOA-Graphene nanocomposite as a key player in the future of wearable energy storage, opening avenues for further exploration, optimization, and integration into practical applications.

Metabolic alterations and mitochondrial dysfunction in human airway BEAS-2B cells exposed to vanadium pentoxide

Vanadium pentoxide (V+5) is a hazardous material that has drawn considerable attention due to its wide use in industrial sectors and increased release into environment from human activities. It poses potential adverse effects on animals and human health, with pronounced impact on lung physiology and functions. In this study, we investigated the metabolic response of human bronchial epithelial BEAS-2B cells to low-level V+5 exposure (0.01, 0.1, and 1 ppm) using liquid chromatography-high resolution mass spectrometry (LC-HRMS). Exposure to V+5 caused extensive changes to cellular metabolism in BEAS-2B cells, including TCA cycle, glycolysis, fatty acids, amino acids, amino sugars, nucleotide sugar, sialic acid, vitamin D3, and drug metabolism, without causing cell death. Altered mitochondrial structure and function were observed with as low as 0.01 ppm (0.2 μM) V+5 exposure. In addition, decreased level of E-cadherin, the prototypical epithelial marker of epithelial-mesenchymal transition (EMT), was observed following V+5 treatment, supporting potential toxicity of V+5 at low levels. Taken together, the present study shows that V+5 has adverse effects on mitochondria and the metabolome which may result in EMT activation in the absence of cell death. Furthermore, results suggest that high-resolution metabolomics could serve as a powerful tool to investigate metal toxicity at levels which do not cause cell death.

Nanopatterning of thin amorphous vanadium oxide films by oxidation scanning probe lithography

Oxidation scanning probe lithography is one of the most promising techniques for nanostructuring. Vanadium oxides constitute a class of functionally rich materials that are promising for various practical applications and have unique physical properties. Currently, the formation of nanocrystals and nanostructures with well-defined dimensions is a challenging task. This study presents a detailed investigation of the processes involved in oxidation scanning probe lithography on the surface of thin amorphous vanadium oxide (VOx) films. It was shown that the oxidizable regions of the film transform into a water-soluble vanadium pentoxide (V2O5) in accordance with classical redox reactions. The oxidation kinetics was shown to be consistent with the Cabrera-Mott model. Dissolving the oxidized regions in water resulted in the formation of nanohole arrays with defined sizes in VOx films. Nanostructures with a depth of less than 0.3 nm and lateral dimensions of less than 50 nm were obtained at relative humidity of about 10 %. It was demonstrated that VOx films about 10 nm thick can be completely oxidized in local areas, enabling the formation of isolated nanostructures. The considered method of nanostructuring VOx is promising for the formation of novel photonic and nanoelectronic devices.

Self-supporting nickel-doped V2O5 nanoarrays as bifunctional electrodes for wearable aqueous zinc-ion batteries and pressure sensors

Vanadium pentoxide (V2O5), due to its distinctive open-framework construction and significant theoretical capacity, has widespread applications in the rapid development of aqueous zinc-ion batteries (AZIBs) and pressure sensors. However, V2O5 exhibits rapid capacity degradation and poor cycling stability due to its low electrical conductivity and ion diffusion rate, limiting its vast application prospects. Therefore, the self-supporting V2O5 nanoarrays employing a Ni doping strategy on flexible carbon substrates act as an AZIBs cathode material (Ni–V2O5@CNTF), which possesses an enlarged interlayer space and high ion conductivity to provide a stable crystal structure for fast and reversible Zn2+ insertion/extraction. More notably, the assembled Zn/Ni–V2O5@CNTF battery achieves a high capacity of 398.85 mAh cm−3 at 0.1 A cm−3, superior rate performance and cycling stability for 2000 cycles. In addition, the V2O5 nanoarrays grown on carbon cloth serving as the functional electrode material (Ni–V2O5@CC) are applied in a flexible resistive pressure sensor, exhibiting a high sensitivity of 0.8 kPa−1 from 0 to 5.0 kPa and stable sensing capabilities from 0 to 25 kPa. Furthermore, extensive applications are investigated in monitoring human activities and anti-intrusion pre-alarm systems. This work demonstrates a dual-functional fabric electrode based on Ni–V2O5, offering new guidelines for the next generation of multifunctional flexible electronic products.

V2O5 based nanocomposites with MOF and rGO for the adsorption and photocatalytic degradation of methylene blue dye

In the present work, vanadium pentoxide-metal organic framework (V2O5-MIL 125 MOF) and vanadium pentoxide-reduced graphene oxide (V2O5-rGO) nanocomposites were successfully synthesized using a facile low-temperature hydrothermal treatment. These nanocomposites were used as photocatalysts to study the adsorption capacity and photocatalytic degradation of methylene blue (MB) dye in an aqueous solutions, under dark and UV light conditions. The influence of adsorption on dye removal and its isotherm revealed that both the nanocomposites follow the Freundlich isotherm. The kinetics of adsorption indicated pseudo-second-order behaviour. V2O5-MIL 125 MOF and V2O5-rGO exhibited maximum dye adsorption capacities of 62 and 24 mg/g, respectively. The optimal values for maximum photocatalytic degradation were determined, and the mechanism of degradation was verified using radical scavengers. A 125 W high-pressure mercury vapour light was employed as the light source for all dye degradation studies. Maximum degradation was obtained at neutral conditions (pH 7.4) of the solution, ambient temperature (30±2˚C), and an initial dye concentration of 10 ppm. The synthesized photocatalysts V2O5-MIL 125 MOF and V2O5-rGO exhibited maximum degradation of 87% within 270 min and 82% within 300 min of UV light exposure, respectively. The adsorption and photocatalytic effects of V2O5-MIL 125 MOF and V2O5-rGO were also compared with pure vanadium pentoxide (V2O5), revealing superior activity in both cases.

Visible-light optical limiting of vanadia–polyvinylpyrrolidone nanofibers

In this work, vanadium pentoxide (V2O5) nanoparticles-filled electrospun polyvinylpyrrolidone (PVP) nanofibers were investigated systematically at various nanofiller weight percentages (8 and 10 wt%) and input intensities to reveal the effective optical limiting feature in the visible spectrum. XRD analysis demonstrated the purity of the produced V2O5 nanoparticles. According to SEM findings, V2O5 nanoparticles were effectively integrated into the PVP nanofibers. Two distinct absorption bands were observed at around 400 and 217 nm. These bands were related to PVP and V2O5 nanoparticles in linear absorption measurements, respectively. Moreover, an increased Urbach energy value was obtained with an increase in V2O5 nanofiller content within PVP. Open-aperture Z-scan measurements were taken at 532 nm considering the band gap energy of the V2O5 nanofillers in PVP composite nanofibers. In 8 wt% V2O5 nanofilled PVP nanofibers, one-photon absorption (OPA) was the main nonlinear absorption (NA) mechanism, and the defect states of the V2O5 nanoparticles had no contribution to NA. On the other hand, sequential two-photon absorption was the main NA mechanism, and the defect states of the nanoparticles caused more efficient NA behavior in 10 wt% V2O5 nanofilled PVP nanofibers. The effective optical limiting behavior was obtained for this composite nanofiber with lower limiting threshold as 1.49 × 10–5 J/cm2. The V2O5 nanofilled PVP nanofibers presented strong potential optical limiters in the visible wavelength region. This was attributed to their high linear transmittance at low input intensities and their robust NA behavior at higher input intensities.

Synthesis and Characterization of V2O5 Nanorods Using Hydrothermal Method for Energy Application

Background: Nanomaterials are very useful in energy harvesting and energy storage devices. Morphological features play a vital role in energy storage devices. Supercapacitors and batteries are examples of energy storage devices. The working of a supercapacitor is decided by the nature of the microstructure and other features of the electrode material. Vanadium Pentaoxide (V2O5) is one of the promising materials due to its attractive features, such as band gap, multiple oxidation state, and large conductivity transition from semiconducting to conducting domain. Objective: This study aimed to perform the tuning of structural, optical and morphological properties of V2O5 nanomaterials using the hydrothermal method. Methods: A low-cost hydrothermal method was used in this work. Hydrothermal synthesis was carried out at different concentrations of Ammonium Metavanadate (NH4VO3), varying from 0.06 M, 0.08 M, and 0.1 M in the aqueous medium. Moreover, the pH of the solution was maintained at 4 using drop-wise addition of H2SO4. Hydrothermal synthesis was carried out at 160° for 24 hours. The synthesized precipitate was annealed at 700° for 7 hours in ambient air. Structural, optical, morphological, and elemental probing was carried out. Result: XRD revealed the formation of monoclinic crystalline phase formation of V2O5. Crystallite size increased with an increase in the concentration of vanadium precursor. The band gap obtained using UV-Vis spectroscopy decreased upon an increase in concentration. SEM micrographs displayed nanosheet and nanorod-like distorted morphology. The presence of vanadium and oxygen was noticed in the EDS study. Conclusion:: Nanoparticles with attractive features are very useful as an electrode material for supercapacitors. Upon changing concentration, we can change the band gap of the material, adding an extra edge in the use of these materials.

Scientific substantiation of average annual maximum permissible level of vanadium pentoxide in ambient air as per permissible health risk

Relevance of this study is determined by the sanitary-epidemiological legislation of the Russian Federation with stipulated requirements to create hygiene standards for environmental factors ensuring their safety for people. These hygienic standards should guarantee absence of impermissible lifetime health risks. Divanadium pentoxide is a chemical that should be mandatorily regulated in ambient air under long-term exposure due to its wide prevalence and high toxicity. An average annual MPL for divanadium pentoxide was established by using systemic analysis of research literature and regulatory documents. According to selection results, three key epidemiological studies were taken for further analysis. They provided evidence of adverse effects produced by divanadium pentoxide on human health (the respiratory organs in particular) under chronic inhalation exposure. When analyzing a study design, we paid special attention to description of observation groups, values of exposure and nature of its effects, adverse health outcomes caused by exposure to divanadium pentoxide as well as to a type and a value of a point of departure. We calculated a value of the total (complex) uncertainty factor in order to establish an average annual maximum permissible level of the analyzed chemical. As a result, we suggest a scientifically substantiated (among other things, as per permissible health risk levels) average annual maximum permissible level for divanadium pentoxide, which equals 0.0001 mg/m3. This level is safe for human health under lifetime exposure. It is noteworthy that this level corresponds to ‘low uncertainty’, which indicates its high safety for human health.

Solvothermal growth of silver-doped vanadium pentoxide microurchins as a cathode material for all-solid-state asymmetric supercapacitors

This study aims to improve the electrochemical properties of vanadium pentoxide by inserting silver cations into the vanadium oxide lattice. The porous silver-doped V2O5 (Ag-V2O5) microurchins were grown via a facile one-step solvothermal process. The enhanced mesoporosity and interlayer d-spacing upon silver-doping, as confirmed by Brunauer–Emmett–Teller (BET) and X-ray diffraction analyses, played an important role in facilitating the intercalation/de-intercalation of electrolyte ions and thus enhancing the capacitive performance of V2O5. The Ag-V2O5 electrode delivered a superior capacitance of 535.6 F/g at 0.5 A/g and a higher rate capacity of 78.8% in non-aqueous lithium perchlorate electrolyte compared to sodium perchlorate electrolyte. Furthermore, the specific capacitance of V2O5 was remarkably increased by ∼56% upon 5.33 at% Ag-doping. An all-solid-state asymmetric supercapacitor (ASC) was fabricated using Ag-V2O5 as the cathode, activated carbon cloth as the anode, and LiClO4-loaded poly(acrylonitrile-co-1-vinylimidazole-co-itaconic acid) as a solid electrolyte. The ASC was stably operating in a wide potential window of 0–1.6 V and delivered a high energy of 53.8 Wh kg−1. Most importantly, the ASC exhibits a slow self-discharge rate with only 7.7% voltage loss after 17 h when charged at 1.6 V. Hence, these impressive electrochemical performances of Ag-V2O5 make it a promising cathode material for next-generation supercapacitors.

Catalyzing Desolvation at Cathode-Electrolyte Interface Enabling High-Performance Magnesium-Ion Batteries.

Magnesium ion batteries (MIBs) are expected to be the promising candidates in the post-lithium-ion era with high safety, low cost and almost dendrite-free nature. However, the sluggish diffusion kinetics and strong solvation capability of the strongly polarized Mg2+ are seriously limiting the specific capacity and lifespan of MIBs. In this work, catalytic desolvation is introduced into MIBs for the first time by modifying vanadium pentoxide (V2O5) with molybdenum disulfide quantum dots (MQDs), and it is demonstrated via density function theory (DFT) calculations that MQDs can effectively lower the desolvation energy barrier of Mg2+, and therefore catalyze the dissociation of Mg2+-1,2-Dimethoxyethane (Mg2+-DME)bonds and release free electrolyte cations, finally contributing to a fast diffusion kinetics within the cathode. Meanwhile, the local interlayer expansion can also increase the layer spacing of V2O5 and speed up the magnesiation/demagnesiation kinetics. Benefiting from the structural configuration, MIBs exhibit superb reversible capacity (≈300mAhg-1 at 50mAg-1) and unparalleled cycling stability (15 000 cycles at 2Ag-1 with a capacity of ≈70mAhg-1). This approach based on catalytic reactions to regulate the desolvation behavior of the whole interface provides a new idea and reference for the development of high-performance MIBs.

Kaolin supported synergistic effects in g-C3N4/V2O5 nanocomposite systems for advanced energy storage applications

In order to investigate the synergistic potential of a new nanocomposite for improved energy storage applications, this work combines graphitic carbon nitride (g-C3N4), vanadium pentoxide (V2O5) and kaolin. Kaolin functions as a structural matrix, offering stability and support for the integration of g-C3N4 and V2O5 nanoparticles. It is well-known for its wide availability and thermal characteristics. A variety of analytical methods, such as electrochemical analysis, scanning electron microscopy and X-ray diffraction, are used to characterise the synthesised nanocomposite. The specific capacitance and cycling stability of the nanocomposite's electrochemical performance are rigorously assessed. Key issues in efficiency, stability and cost-effectiveness are addressed by an optimised material for advanced energy storage systems, which is the result of the synergistic effects coming from the unique features of each component. With a superior cyclic stability and capacitance retention of 77.7 % even after 2000 cycles, the composite material exhibits a higher specific capacitance value of 415 Fg−1 at 5 mVs−1. This work is a major step towards the creation of novel nanocomposites for high-performing, environmentally friendly energy storage systems.

Fabrication and analysis of PVA/V2O5/BaTiO3 nanocomposite film for flexible optoelectronics

Herein, the vanadium pentoxide (V2O5) powder and barium titanate (BaTiO3) nanoparticles (NPs) were incorporated (1 wt % each) into the polyvinyl alcohol (PVA) matrix to fabricate a flexible film using the solution casting. Structural, morphological, elemental and chemical analysis were performed. The UV visible investigations showed a significant drop in the direct bandgap (5.04–2.61 eV), enhancement in the refractive index (1.05–1.95 at 400 nm), excellent rise in the optical conductivity (2.7 × 109 to 1.2 × 1012 S m−1 at 400 nm) after incorporation of V2O5/BaTiO3 NPs into the PVA matrix. The frequency response analysis showed a good rise in the dielectric constant (1.1–3.8 at 1 MHz) and a drop in the dielectric loss (5.4–3 at 10 MHz). Thermal analysis also indicated modifications. Enhancements were found in Young's modulus (210–374 MPa). The fabricated PVA/V2O5/BaTiO3 nanocomposite film might be a potential candidate for optoelectronic devices.

Catalytically driven hydrogen storage in magnesium hydride through its chemical interaction with the additive vanadium pentoxide

Considering the importance of understanding the catalysis of metal oxides incorporated hydrogen storage system MgH2, in this study we tried to identify the chemical interaction between magnesium hydride (MgH2) and the additive vanadium pentoxide (V2O5). Two test samples, MgH2+0.25V2O5 and 0.25MgH2+V2O5, were subjected to mechanical milling treatment for different times (15 min, 1h, 2h, 5h, 10h and 15h), and the phase change was monitored systematically. The detailed X ray diffraction analyses suggest that the phase evolution starts with the reduction of V2O5 and it ends up with the formation of a rock salt structure, typified by MgxVyOx + y. High-resolution transmission electron microscopy study coupled with energy dispersive spectroscopy suggest that the distribution of V, Mg and O in MgxVyOx + y is homogenous, though V-rich spots/boundaries can be spotted across the rock salt particles. Further verification by X–ray photoelectron spectroscopy suggests that V exists in a mixed valence state in the end sample, 15h reacted MgH2+0.25V2O5. Differential scanning calorimetry and hydrogen storage kinetics studies prove the improved hydrogen storage behavior of MgxVyOx + y containing MgH2 sample. We believe that the formation of MgxVyOx + y rock salt particles with V enriched spots/interfaces is the key step in the catalysis of V2O5 incorporated hydrogen storage system, MgH2.

High-Potential Aqueous Asymmetric Supercapacitor Based on 2D Molybdenum Disulfide and Vanadium Pentoxide Electrodes

High-Potential Aqueous Asymmetric Supercapacitor Based on 2D Molybdenum Disulfide and Vanadium Pentoxide Electrodes

Effect of deposition time on the optical properties of vanadium pentoxide films grown on porous silicon nanostructure

Effect of deposition time on the optical properties of vanadium pentoxide films grown on porous silicon nanostructure