The supercapattery designed with a binary composite of niobium silver sulfide (NbAg<sub>2</sub>S) and activated carbon for enhanced electrochemical performance

Rafique, Hirra; Iqbal, Muhammad Waqas; Wabaidur, Saikh Mohammad; Hassan, Haseeb ul; Afzal, Amir Muhammad; Abbas, Tasawar; Habila, Mohamed A.; Elahi, Ehsan

doi:10.1039/d3ra01230a

Cited by 26 publications

(7 citation statements)

References 87 publications

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“…In a similar vein, the GCD (galvanostatic charge–discharge) curves obtained from the hybrid material under different current densities exhibit a clear deviation from triangular behavior (Figure ). The deviation can be attributed to the redox reaction of AgCo-MOF, which is in good agreement with the results obtained from the CV curves . Furthermore, it is noteworthy that the hybrid material demonstrates a longer discharging time, even at higher current densities.…”

Section: Results Analysissupporting

confidence: 88%

“…The deviation can be attributed to the redox reaction of AgCo-MOF, which is in good agreement with the results obtained from the CV curves. 32 Furthermore, it is noteworthy that the hybrid material demonstrates a longer discharging time, even at higher current densities. This characteristic indicates the potential for higher energy densities due to the larger specific capacitance achieved through the incorporation of MnS.…”

Section: Electrochemical Evaluationmentioning

confidence: 99%

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AgCo-MOF/MnS Deposited on Carbonized Wood Substrate: Pioneering the Future of Supercapacitors and Oxygen Evolution Reactions

Hassan,

Iqbal,

Afzal

et al. 2023

Energy Fuels

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Wood, becoming a renewable biomass resource, shows a lot of potential for various uses. In this work, we developed a novel carbonized wood as a substrate material, and AgCo-MOF/MnS was deposited on it. This composite material AgCo-MOF/ MnS@CWS possesses unique properties such as excellent specific capacitance, adaptability, flexibility, and the capacity to produce high electrical power. When tested in a three-cell assembly, the resultant composite showed remarkable performance by delivering a specific capacity of 1068 C/g at 1.0 A/g. A supercapacitor was also built by merging AgCoMOF/MnS@CWS and AC@CWS in a two-cell configuration. The energy and power density for the AgCoMOF/MnS@CWS//AC@CWS device was 50 Wh/kg and 830 W/kg, respectively. Additionally, the stability measurement indicates that AgCoMOF/MnS@CWS//AC@CWS can retain up to 98% of its initial capacity after 12000 GCD cycles. The AgCo-MOF/MnS demonstrates a 146 mV overpotential along a 45 mV/dec Tafel slope in the OER application.

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Section: Results Analysissupporting

confidence: 88%

Section: Electrochemical Evaluationmentioning

confidence: 99%

AgCo-MOF/MnS Deposited on Carbonized Wood Substrate: Pioneering the Future of Supercapacitors and Oxygen Evolution Reactions

Hassan,

Iqbal,

Afzal

et al. 2023

Energy Fuels

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“… C = ∫ ( I d V ) / ( m × v ) I indicates the current, m is the active mass, and v is the scan rate. While the capacity from GCD tests was calculated with the help of the equation below C = ( I × t ) / m t is the discharge duration, m is the active material mass, and V is the potential window.…”

Section: Methodsmentioning

confidence: 99%

Synergistic Co-MOF/ZnS Composite: Advancing Supercapattery Performance and Catalyzing Hydrogen Evolution Reaction

Raffah,

Hassan,

Iqbal

et al. 2024

Energy Fuels

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Novel electrode development is crucial in the hunt for long-term energy storage options. In this work, we describe a promising advanced energy storage system with the fabrication of a cobalt metal organic framework doped with zinc sulfide (Co-MOF/ZnS) as an electrode and applied to energy storage and hydrogen evolution reaction (HER) applications. The Brunauer− Emmett−Teller (BET) method showed a 65.32 m 2 /g surface area for Co-MOF/ZnS. The Co-MOF/ZnS electrode has an outstanding capacity of 1615 C/g in a three-electrode setup. Furthermore, when paired with activated carbon (AC) in a supercapattery, this device exhibits a remarkable energy density of 59.33 W h/kg and a power density of 812 W/kg. The cycling stability of the Co-MOF/ZnS//AC supercapattery is evaluated by subjecting it to 10,000 cycles. The Co-MOF/ZnS//AC supercapattery test is carried out shortly after the stability test, and it retains 98% of its original capacity while maintaining a high Coulombic efficiency of 87%. In the HER test, Co-MOF/ZnS exhibits an outstanding overpotential of 434 mV.

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“…Only one notable peak appeared at 2 theta = 23 with indices (002), indicating the existence of MWCNTs [47]. To determine the size of crystallite, Scherer's equation was applied [48]. In equation (4), D stands for crystallite size, the wavelength is indicated by , l k is constant, b is the FWHM, and q is the diffraction angle.…”

Section: X-ray Diffractometry (Xrd)mentioning

confidence: 99%

Influence of temperature on the redox behaviour of binder-free CNTs-NiZnS electrode and the application in efficient energy storage devices

Mindil¹,

Hassan²,

Hadia³

et al. 2023

Phys. Scr.

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Due to their unique structure, the metal sulfides are mechanically stable, have higher conductivities, and are frequently used in energy storage devices. Here, binder-free electrodes were designed by depositing the nickel zinc sulfide (NiZnS) incorporated with carbon nanotubes (CNTs) on the nickel foam (NF). X-ray diffraction (XRD) was used to describe the crystallinity of produced CNTs-NiZnS nanostructures, and morphological investigations were performed using field emission scanning electron microscopy (FESEM). According to the electrochemical measurements, the heating of electrolyte at 80 °C resulted in considerably enhanced specific capacitance of 1475 Cg-1 (50.85 F/m2) and 666 Cg-1 (13.77 F/m2) at 1 and 2 Ag-1 current density, correspondingly. Thus demonstrating a good capacity retention of 47% at 2 Ag-1. The supercapattery (CNTs-NiZnS//AC) was designed with CNTs-NiZnS and AC, providing a specific charge capacity of 212 Cg-1 (at 2.0 Ag-1) along with energy density of 51 Wh-kg-1 at 820 W-kg-1 power density. The stability of CNTs-NiZnS//AC was tested by subjecting it to 5000 successive cycles.

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The supercapattery designed with a binary composite of niobium silver sulfide (NbAg₂S) and activated carbon for enhanced electrochemical performance

Abstract: A supercapattery is a hybrid device that is a combination of a battery and a capacitor.

Cited by 26 publications

References 87 publications

AgCo-MOF/MnS Deposited on Carbonized Wood Substrate: Pioneering the Future of Supercapacitors and Oxygen Evolution Reactions

AgCo-MOF/MnS Deposited on Carbonized Wood Substrate: Pioneering the Future of Supercapacitors and Oxygen Evolution Reactions

Synergistic Co-MOF/ZnS Composite: Advancing Supercapattery Performance and Catalyzing Hydrogen Evolution Reaction

Influence of temperature on the redox behaviour of binder-free CNTs-NiZnS electrode and the application in efficient energy storage devices

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The supercapattery designed with a binary composite of niobium silver sulfide (NbAg2S) and activated carbon for enhanced electrochemical performance

Abstract: A supercapattery is a hybrid device that is a combination of a battery and a capacitor.

Cited by 26 publications

References 87 publications

AgCo-MOF/MnS Deposited on Carbonized Wood Substrate: Pioneering the Future of Supercapacitors and Oxygen Evolution Reactions

AgCo-MOF/MnS Deposited on Carbonized Wood Substrate: Pioneering the Future of Supercapacitors and Oxygen Evolution Reactions

Synergistic Co-MOF/ZnS Composite: Advancing Supercapattery Performance and Catalyzing Hydrogen Evolution Reaction

Influence of temperature on the redox behaviour of binder-free CNTs-NiZnS electrode and the application in efficient energy storage devices

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The supercapattery designed with a binary composite of niobium silver sulfide (NbAg₂S) and activated carbon for enhanced electrochemical performance