Synthesis and design of vanadium intercalated spinal ferrite (Co0.5Ni0.5VxFe1.6−xO4) electrodes for high current supercapacitor applications

Alqarni, Ameerah N.; Çevik, Emre; Gondal, M.A.; Almessiere, M.A.; Baykal, A.; Bozkurt, Ayhan; Slimani, Y.; Hassan, Muhammad; Iqbal, Arfa; Alotaibi, Sarah A.

doi:10.1016/j.est.2022.104357

Cited by 39 publications

(7 citation statements)

References 57 publications

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“…The EDLC stores charge by the adsorption of electrolyte ions onto the surface of the electrode material, which does not require a redox reaction. It therefore has the advantages of a fast response to potential changes and high output. − EDLC electrodes are mainly composed of carbon-based materials such as activated carbon, carbon nanotubes (CNTs), and graphene. The development of nanoparticles, nanorods, and nanofibers of carbon electrodes through nanotechnology allows the surface area to be increased and the electrical capacity to be achieved. − The storage of electrical energy in a pseudocapacitor is based on a reversible and fast Faraday reaction between an electrolyte and an active material, specifically a redox process, which can store a much larger amount of charge.…”

Section: Introductionmentioning

confidence: 99%

Optimization of a Conductive Polymer Layer on MOF-Derived Carbon Materials for High-Performance Supercapacitor Electrodes

Ko,

Lee,

Kim

et al. 2024

ACS Appl. Electron. Mater.

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In this study, we report the preparation of a highly conductive metal−organic framework-derived carbon nanocomposite material with excellent electrochemical activity through a simple surface coating of carbonized-ZIF-8 (C-ZIF-8) with poly(3,4-ethylenedioxythiophene)−poly(styrenesulfonate) (PEDOT−PSS). X-ray diffraction results indicate the successful transformation of crystalline ZIF-8 to amorphous carbon (C-ZIF-8) during carbonization at 850 °C. As-prepared C-ZIF-8 and C-ZIF-8/PEDOT−PSS nanocomposites with different weight ratios of 2:1, 8:1, and 14:1 (C-ZIF-8:PEDOT−PSS) were found to have specific surface areas of 920, 450, 740, and 810 m 2 g −1 , respectively. Importantly, the increase in the ratio of PEDOT−PSS (to 2:1) reveals that the PEDOT−PSS seems to block the micro-and mesopores of C-ZIF-8 due to the high density of the PEDOT−PSS coating. In cyclic voltammetry results, the specific capacitances of C-ZIF-8 and C-ZIF-8/PEDOT−PSS (14:1, 8:1, 2:1) at a scan rate of 5 mV S −1 were 44.1, 114.2, 149.4, and 110.3 F g −1 , respectively. The C-ZIF-8/PEDOT−PSS nanocomposite exhibited a 4-fold increase in specific capacitance (77 F g −1 ) compared to that of pristine C-ZIF-8 (18.4 F g −1 ) at a current density of 0.5 A g −1 by galvanostatic charge−discharge. The retention of specific capacitance is maintained over 86% subsequent to 1100 cycles at 2 A g −1 by cyclic stability tests. Furthermore, the specific capacitances of C-ZIF-8/PEDOT−PSS coated on a bendable carbon cloth in its initial state and after the bending cycle test were 208.2 and 186.8 F g −1 , respectively. This indicates that it maintained approximately 90% of its specific capacitance after 1000 bending cycles. Our experiments demonstrate that the C-ZIF-8/PEDOT−PSS nanocomposite exhibits a continuous conductive pathway and electrochemical activity due to PEDOT−PSS along with high porosity, a high specific surface area, abundant electroactive sites, and faster ion diffusion kinetics due to C-ZIF-8.

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Section: Introductionmentioning

confidence: 99%

Optimization of a Conductive Polymer Layer on MOF-Derived Carbon Materials for High-Performance Supercapacitor Electrodes

Ko,

Lee,

Kim

et al. 2024

ACS Appl. Electron. Mater.

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“…Furthermore, the excellent cycle stability (>10 000 cycles) and good rate performance under high current density made it occupy an important role in the field of energy storage. [5][6][7][8] Transition metal sulfides have a faster electron transfer rate, higher electrical conductivity, better multiplicative properties, and higher theoretical specific capacitance than oxides. Ni and Co have been extensively studied due to their abundance in the environment, their low cost, safety and environmental friendliness, and high capacitance properties.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the excellent cycle stability (>10 000 cycles) and good rate performance under high current density made it occupy an important role in the field of energy storage. [ 5–8 ]…”

Section: Introductionmentioning

confidence: 99%

Selenization of NiCo₂S₄ Spinel Structure to Reduce the Charge Transfer Resistance for Supercapacitor Electrode

Liu,

Wang,

Jin

2024

Energy Tech

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Due to the semiconductor properties and the weak charge transfer ability, the further application of spinellide material will be hindered in energy storage. Herein, the NiCo2S4 prepared by the two‐step method is modified adopting Se powder with different mass ratios under aqueous solvothermal conditions. Thanks to the selenide formed on the surface, the Se‐NiCo2S4‐10 sample exhibits a specific capacitance of 713 F g−1 at the current density of 1.0 A g−1, which is 2.6 times higher than that of pure NiCo2S4. Commercially, the assembled asymmetric supercapacitors Se‐NiCo2S4‐10//AC present an energy density of 25.13 Wh kg−1 under the power density of 753.9 W kg−1. This work shows that surface selenization has the effect of reducing charge transfer on spinel‐like nanomaterials, which provides a modified idea for the application of spinel materials in supercapacitor electrodes.

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“…Moreover, the magneto strictive features of ferrites enable their rapid and easy separation in the reaction medium [14]. These characteristics collectively make ferrites well-suited for oxidationreduction reactions, resulting in increased pseudocapacitance and enhanced electrochemical performance of supercapacitor electrodes [15].…”

Section: Introductionmentioning

confidence: 99%

The Role of Cobalt Ferrites Nanoparticles on Structural and Electrochmical Properties of Mesoporous Silica for Supercapacitor Applications

Salama,

Alshammari,

Nafady

et al. 2023

Preprint

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The research focus in energy storage applications has shifted towards mesoporous silica (MCM-41) material due to its distinct surface, chemical, and electronic properties. However, the electrodes made from mesoporous silica in supercapacitors are unable to meet the growing request for high energy density in electronic devices. To address this limitation, researchers have explored modifying the material with metal oxides, heteroatoms, and conductive polymers, which can provide pseudo-capacitance during charging and discharging processes, thereby enhancing energy density. Among the various materials investigated, ferrite materials, particularly cobalt ferrites (COF), have shown promising electrochemical properties. Nevertheless, their low internal conductivity hinders their usage in supercapacitor applications. Consequently, combining ferrites with MCM-41 has been proposed as a means to enhance the electrochemical behavior. In this study, various contents of COF were loaded on MCM-41. Different characterization methods were used to study the physical and surface properties of the as synthesized materials like XRD, FTIR, SEM, TEM, EDX and SEM-mapping. TEM images confirmed that all the as-synthesized composites retained the mesoporous structure, and the particle size of ferrites ranged from 8 to 14 nm. The cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) techniques were employed to investigate the electrochemical characteristics of the composite materials in H2SO4 electrolyte solution (1.0 M) and a potential window ranging from 0.0 to 0.8 V. The results demonstrated that the incorporation of ferrites onto MCM-41 led to an elevation in specific capacitance, with the highest value (746 F.g-1) observed at 35 COF-MCM-41 composite. However, further increasing the content of ferrites resulted in a decrease in specific capacitance. Furthermore, the prepared composites exhibited excellent cycling stability even after 5000 cycles, with MCM-41, COF, and 35 COF-MCM-41 retaining 84.4%, 89.4%, and 94.8% of their initial specific capacitance, respectively. These findings highlight the significant role played by the dispersion of cobalt ferrite nanoparticles in enhancing pseudocapacitance behavior, thus improving the overall electrochemical performance of the composites.

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Synthesis and design of vanadium intercalated spinal ferrite (Co0.5Ni0.5VxFe1.6−xO4) electrodes for high current supercapacitor applications

Cited by 39 publications

References 57 publications

Optimization of a Conductive Polymer Layer on MOF-Derived Carbon Materials for High-Performance Supercapacitor Electrodes

Optimization of a Conductive Polymer Layer on MOF-Derived Carbon Materials for High-Performance Supercapacitor Electrodes

Selenization of NiCo₂S₄ Spinel Structure to Reduce the Charge Transfer Resistance for Supercapacitor Electrode

The Role of Cobalt Ferrites Nanoparticles on Structural and Electrochmical Properties of Mesoporous Silica for Supercapacitor Applications

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Synthesis and design of vanadium intercalated spinal ferrite (Co0.5Ni0.5VxFe1.6−xO4) electrodes for high current supercapacitor applications

Cited by 39 publications

References 57 publications

Optimization of a Conductive Polymer Layer on MOF-Derived Carbon Materials for High-Performance Supercapacitor Electrodes

Optimization of a Conductive Polymer Layer on MOF-Derived Carbon Materials for High-Performance Supercapacitor Electrodes

Selenization of NiCo2S4 Spinel Structure to Reduce the Charge Transfer Resistance for Supercapacitor Electrode

The Role of Cobalt Ferrites Nanoparticles on Structural and Electrochmical Properties of Mesoporous Silica for Supercapacitor Applications

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Selenization of NiCo₂S₄ Spinel Structure to Reduce the Charge Transfer Resistance for Supercapacitor Electrode