Synthesis, characterization, electrochemical and catalytic performance of NiO nanostructures and Ag-NiO nanocomposite

Khedkar, Chaitali V.; Vedpathak, Amol S.; Dhotre, Abhijeet V.; Daware, Krishna D.; Kolekar, Y. D.; Sartale, Shrikrishna D.; Gosavi, Suresh W.; Patil, S. F.

doi:10.1016/j.chphi.2022.100153

Cited by 8 publications

(7 citation statements)

References 54 publications

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“…Principally, two processes contribute to the charge storage in the NVO nanostructure: (1) surface capacitive charge component and (2) diffusion-controlled charge component of the NVO nanobelt electrode material. Trasatti suggested that the total capacitance is the accumulation of the surface capacitive and the diffusion-controlled parameters. , Here, the CV measurements with different scan rates were used to analyze the capacitive and diffusive charge components to understand the charge storage mechanism. Using eq , the C sp value was calculated (Supporting Information, Table S1) for all the scan rates.…”

Section: Resultsmentioning

confidence: 99%

“…Trasatti suggested that the total capacitance is the accumulation of the surface capacitive and the diffusion-controlled parameters. 45,46 Here, the CV measurements with different scan rates were used to analyze the capacitive and diffusive charge components to understand the charge storage mechanism. Using eq 1, the C sp value was calculated (Supporting Information, Table S1) for all the scan rates.…”

Section: Transmission Electron Microscopymentioning

confidence: 99%

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One-Dimensional Layered Sodium Vanadate Nanobelts: A Potential Aspirant for High-Performance Supercapacitor Applications

Vedpathak

Shinde

Desai

et al. 2023

ACS Appl. Energy Mater.

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The one-dimensional (1D) transition metal oxide (TMO) nanostructures have significant advantages in electrochemical energy storage fields. To date, simplifying the processing techniques and improving the yield without compromising the quality are one of the top priorities in pushing these TMO materials for scalable energy storage applications. This study presents a simple ultrasonic-assisted chemical route to prepare Na 2 V 6 O 16 (NVO) nanobelts. The X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, and transmission electron microscopy characterizations are used to confirm the formation of 1D NVO nanobelt structures. The growth mechanism for the formation of NVO nanobelts is also provided. Moreover, these synthesized NVO nanobelts are used as an electrode material for supercapacitor (SC) applications, which exhibit a specific capacitance of 455 F g −1 at 0.5 A g −1 with typical capacitive behavior. An asymmetric coin cell SC device of activated carbon//NVO is also fabricated. This fabricated device delivers a high energy density of 42.4 W h kg −1 and a high power density of 4.3 kW h kg −1 , along with 80% capacity retention after 5000 cycles. The 1D NVO nanobelt structures can be considered a promising cathode material with superior rate capability and high capacitance for SC applications.

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Section: Resultsmentioning

confidence: 99%

Section: Transmission Electron Microscopymentioning

confidence: 99%

One-Dimensional Layered Sodium Vanadate Nanobelts: A Potential Aspirant for High-Performance Supercapacitor Applications

Vedpathak

Shinde

Desai

et al. 2023

ACS Appl. Energy Mater.

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“…These CV measurements were performed at different scan rates 10–100 mV s −1 and the specific capacitance values were calculated using the following Equation (6) [ 43–46 ]

{\text{C}}_{\text{sp}}=\frac{\int i\text{d}v}{m\nu \text{\hspace{0.17em}}\Delta V}

Where,

\int i \text{d} v

gives the CV integral area, m is the mass of the active material (g), ν is the potential scan rate (mV s −1 ), and

\Delta V

is the potential window used during CV measurement ( V ). The calculated specific capacitance values from CV curves at different scan rates are displayed in Table S1, Supporting Information and plotted in Figure 6c.…”

Section: Resultsmentioning

confidence: 99%

“…The CV curves for both electrodes exhibit similar oval shapes without any sharp redox peaks between the potential window 0-0.6 V. This nature indicates that fast reversible redox reactions happening over the surface (typically capacitive behavior) of the electrode materials. These CV measurements were performed at different scan rates 10-100 mV s À1 and the specific capacitance values were calculated using the following Equation ( 6) [43][44][45][46]…”

Section: Electrochemical Analysismentioning

confidence: 99%

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1D Layered LiVO₃ Nanorods Synthesized by Ultrasonic‐Assisted Chemical Route for Supercapacitor Applications

Shinde,

Vedpathak,

Nagare

et al. 2023

Energy Tech

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Herein, 1D layered lithium vanadate (LiVO3) nanorods are successfully synthesized using a facile ultrasonic‐assisted chemical route using V2O5 as the starting material. The as‐prepared LiVO3 nanorods are characterized by X‐ray diffraction, X‐ray photoelectron spectroscopy, and field emission scanning electron microscopy techniques. The reaction and growth mechanism of LiVO3 nanorods formation are provided. The synthesized LiVO3 nanorods are used as electrode material for supercapacitor applications and exhibit a high specific capacitance of 426.2 F g−1 at 0.5 A g−1. Additionally, the LiVO3 // AC asymmetric coin cell supercapacitor device fabricated with LiVO3 as the cathode shows an excellent energy density of 25.4 Wh kg−1 at a power density of 228.5 Wkg−1 along with superior cyclic stability of ≈80% after 5000 cycles and wide operating voltage window of 1.6 V. Density functional theory studies show that the decrease in the bandgap of the LiVO3 is one of the intrinsic reasons that the conductivity and capacitive charge storage performance are greatly improved over V2O5. This design of a 1D layered LiVO3 nanorods presented in this work will provide a path to discover high performing electrode materials for supercapacitor applications.

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Facile antisolvent crystallization-based synthesis of Cu/CoO nanocomposites as catalysts for the electrochemical detection of H2O2

Liu

Choi

Hyun

et al. 2023

Korean J. Chem. Eng.

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Synthesis, characterization, electrochemical and catalytic performance of NiO nanostructures and Ag-NiO nanocomposite

Cited by 8 publications

References 54 publications

One-Dimensional Layered Sodium Vanadate Nanobelts: A Potential Aspirant for High-Performance Supercapacitor Applications

One-Dimensional Layered Sodium Vanadate Nanobelts: A Potential Aspirant for High-Performance Supercapacitor Applications

1D Layered LiVO₃ Nanorods Synthesized by Ultrasonic‐Assisted Chemical Route for Supercapacitor Applications

Facile antisolvent crystallization-based synthesis of Cu/CoO nanocomposites as catalysts for the electrochemical detection of H2O2

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Synthesis, characterization, electrochemical and catalytic performance of NiO nanostructures and Ag-NiO nanocomposite

Cited by 8 publications

References 54 publications

One-Dimensional Layered Sodium Vanadate Nanobelts: A Potential Aspirant for High-Performance Supercapacitor Applications

One-Dimensional Layered Sodium Vanadate Nanobelts: A Potential Aspirant for High-Performance Supercapacitor Applications

1D Layered LiVO3 Nanorods Synthesized by Ultrasonic‐Assisted Chemical Route for Supercapacitor Applications

Facile antisolvent crystallization-based synthesis of Cu/CoO nanocomposites as catalysts for the electrochemical detection of H2O2

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1D Layered LiVO₃ Nanorods Synthesized by Ultrasonic‐Assisted Chemical Route for Supercapacitor Applications