Fabrication of Mn3O4-WO3 nanoparticles based nanocomposites symmetric supercapacitor device for enhanced energy storage performance under neutral electrolyte

Rudra, Siddheswar; Janani, K.; Thamizharasan, G; Pradhan, Mukul; Rani, Barkha; Sahu, Niroj Kumar; Nayak, Arpan Kumar

doi:10.1016/j.electacta.2022.139870

Cited by 38 publications

(6 citation statements)

References 39 publications

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“…According to Dun’s power law, the charge storage mechanism can be elucidated using CV profiles at various sweep rates. The equations are mentioned below Here, a and b represent the adjustable parameters and v is the sweep rate.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, Dunn and colleagues proposed the following equations to understand precisely the charge storage mechanism of all electrodes and the overall charge divided into capacitive ( k 1 V ) and diffusive ( k 2 V 1/2 ) process. , or …”

Section: Resultsmentioning

confidence: 99%

“…The equations are mentioned below. 68 6f) is associated with the fast diffusion of ions in electrolyte to the electrodes. 70 Table 1 shows the estimated value for series resistance (R s ), charge-transfer resistance (R CT ), and Warburg diffusion resistance (W) of Fe 2 O 3 , Bi 2 O 3 , BiFeO 3 ,Bi 36 Fe 2 O 57 , and BFO-650 (1:2) active electrodes.…”

Section: Surface Area Analysismentioning

confidence: 99%

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Phase- and Crystal Structure-Controlled Synthesis of Bi₂O₃, Fe₂O₃, and BiFeO₃ Nanomaterials for Energy Storage Devices

Nayak

Gopalakrishnan

2022

ACS Appl. Nano Mater.

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Controlling the phase and crystal structure of nanomaterials is a challenging mission in a wet chemical method and has remarkable importance to the materials properties. Herein, we demonstrate a facile sol−gel method to synthesize Bi 2 O 3 , Fe 2 O 3 , BiFeO 3 , Bi 36 Fe 2 O 57 , secondary phase, and mixed phase of BiFeO 3 (Bi 25 FeO 40 and Bi 2 Fe 4 O 9 ) by tailoring the parameters such as molar concentration, calcination temperature, and duration. Further, all the electrode materials were demonstrated for supercapacitor (SC) application. The pure-phase BiFeO 3 nanoparticles show a highest specific capacitance of 253 F/g at a current density of 1 A/g compared to all other electrodes under a 3 M KOH electrolyte. The higher specific capacitance of BiFeO 3 nanoparticles is ascribed to their higher surface area, pure ABO 3 structure, and lower charge-transfer resistance. Moreover, the BiFeO 3 nanoparticles were also tested under a neutral electrolyte (1 M Na 2 SO 4 ) and found to have 3.7 times lower specific capacitance compared to the alkaline electrolyte (3 M KOH). The electrokinetic study of the as-synthesized active electrodes illustrates the maximum capacitive involvement to store the overall charge. The BiFeO 3 nanoparticles display outstanding stability with a retention rate of 99.02% after 1100 consecutive galvanostatic charge−discharge cycles at various current densities. Moreover, a solid-state symmetric SC device (SSD) was fabricated using BiFeO 3 nanoparticles. The device delivered a maximum energy density of 17.01 W h/kg at a current density of 1 A/g and a power density of 7.2 kW/kg at a current density of 10 A/g. The BiFeO 3 SSD showed an excellent capacitive retention rate of 88% after 5000 cycles, suggesting that it could be a promising electrode material for practical application in energy storage devices.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Surface Area Analysismentioning

confidence: 99%

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Phase- and Crystal Structure-Controlled Synthesis of Bi₂O₃, Fe₂O₃, and BiFeO₃ Nanomaterials for Energy Storage Devices

Nayak

Gopalakrishnan

2022

ACS Appl. Nano Mater.

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“…To further investigate the electrochemical performance of the deposited nanostructured BFO electrodes, we analyzed the charge storage mechanism to find the capacitive, and the diffusion-controlled contribution [31,32]. To do this, we investigated the CV data at different sweep rates, considering that the current (i) follows a power-law relationship with the sweep rate ν: i(V ) = aν b , where a e b are fitting parameters, and the slope (b) is estimated from the plot of logarithm of current ( i log ) versus the logarithm of sweep rate ( n log ).…”

Section: Electrochemical Analysismentioning

confidence: 99%

Exploring morphological variation in bismuth ferrite nanostructures by pulsed laser deposition: synthesis, structural and electrochemical properties

García,

Santos,

Liu

et al. 2024

Nanotechnology

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Structural and electrochemical properties of bismuth ferrite nanostructures produced by pulsed laser deposition with various morphologies are reported. The nanostructures are also explored as electrode materials for high-performance supercapacitors. Scanning electron microscopy images revealed that various bismuth ferrite morphologies were produced by varying the background pressure (10-6, 0.01, 0.10, 0.25, 0.50, 1.0, 2.0 and 4.0 Torr) in the deposition chamber and submitting them to a thermal treatment after deposition at 500 0C. The as-deposited bismuth ferrite nanostructures range from very compact thin-film (10-6, 0.01, 0.10 Torr), to clustered nanoparticles (0.25, 0.50, 1.0 Torr), to very dispersed arrangement of nanoparticles (2.0 and 4.0 Torr). The electrochemical characteristic of the electrodes was investigated through cyclic voltammetry process. The increase in the specific surface area of the nanostructures as background pressure in the chamber increases does not lead to an increase in interfacial capacitance. This is likely due to the weakening of electrical contact between nanoparticles with increasing porosity of the nanostructures. The thermal treatment increased the contact between nanoparticles, which caused an increase in the interfacial capacitance of the nanostructure deposited under high background pressure in the chamber.

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“…[23] Remarkable awareness has been attached significance to the nanostructures with enlarged surface area and raised adsorption activity to explore the electrochemical energy storage technologies and reduce drawbacks of WO 3 . These nanoarchitectural approaches possess 0D WO 3 quantum dots [24] and nanoparticles, [25] WO 3 nanorods, [21] nanowires, [26] nanotubes [27] and nanofibers, [28] 2D WO 3 nanosheets [29] and nanoplates, [30] 3D WO 3 nanospheres, [31] nanoflowers, [32] hierarchical, [33,34] and nanoporous. [34] Pseudocapacitors do not require thicker electroactive materials since they store charge primarily in the first few nanometers of the surface.…”

mentioning

confidence: 99%

Evaluation of Supercapacitor Properties of Radio Frequency Sputter Binder‐Free and Nanosandwich WO₃/SiO₂/WO₃ Thin Film

2023

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Supercapacitors require efficient and environmentally friendly electrodes. This study investigates the promising potential of a tungsten oxide/silicon dioxide/tungsten oxide (WO3/SiO2/WO3) thin film on a Cu substrate as an alternative to conventional metal oxide flexible electrodes. Motivated by the need for enhanced energy storage capabilities, the WO3/SiO2/WO3 composite combines WO3 high specific capacitance and electrochemical stability of WO3 with improved mechanical durability and high surface area of SiO2, offering a synergistic solution to overcome electrode limitations. Utilizing the Radio Frequency (Rf) Magnetron Sputtering technique, the WO3/SiO2/WO3 thin film is precisely deposited on a Cu flexible substrate without organic additives, conductive agents, binder chemicals, or substrate pre‐treatment. Electrochemical characterization reveals the film’s pseudocapacitive behaviour, facilitated by the SiO2 interlayer, enabling influential adjustment of electrolyte ions within the electrode structure. The obtained high specific capacitances at various scan rates and current densities demonstrate the potential of the thin film for supercapacitor applications. This research highlights the nanosandwich WO3/SiO2/WO3 thin film as a promising material for flexible energy storage and intelligent nanodevices, making it a noteworthy candidate for various flexible applications. The findings contribute to the development of efficient and environmentally friendly energy storage solutions.This article is protected by copyright. All rights reserved.

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Fabrication of Mn3O4-WO3 nanoparticles based nanocomposites symmetric supercapacitor device for enhanced energy storage performance under neutral electrolyte

Cited by 38 publications

References 39 publications

Phase- and Crystal Structure-Controlled Synthesis of Bi₂O₃, Fe₂O₃, and BiFeO₃ Nanomaterials for Energy Storage Devices

Phase- and Crystal Structure-Controlled Synthesis of Bi₂O₃, Fe₂O₃, and BiFeO₃ Nanomaterials for Energy Storage Devices

Exploring morphological variation in bismuth ferrite nanostructures by pulsed laser deposition: synthesis, structural and electrochemical properties

Evaluation of Supercapacitor Properties of Radio Frequency Sputter Binder‐Free and Nanosandwich WO₃/SiO₂/WO₃ Thin Film

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Fabrication of Mn3O4-WO3 nanoparticles based nanocomposites symmetric supercapacitor device for enhanced energy storage performance under neutral electrolyte

Cited by 38 publications

References 39 publications

Phase- and Crystal Structure-Controlled Synthesis of Bi2O3, Fe2O3, and BiFeO3 Nanomaterials for Energy Storage Devices

Phase- and Crystal Structure-Controlled Synthesis of Bi2O3, Fe2O3, and BiFeO3 Nanomaterials for Energy Storage Devices

Exploring morphological variation in bismuth ferrite nanostructures by pulsed laser deposition: synthesis, structural and electrochemical properties

Evaluation of Supercapacitor Properties of Radio Frequency Sputter Binder‐Free and Nanosandwich WO3/SiO2/WO3 Thin Film

Contact Info

Product

Resources

About

Phase- and Crystal Structure-Controlled Synthesis of Bi₂O₃, Fe₂O₃, and BiFeO₃ Nanomaterials for Energy Storage Devices

Phase- and Crystal Structure-Controlled Synthesis of Bi₂O₃, Fe₂O₃, and BiFeO₃ Nanomaterials for Energy Storage Devices

Evaluation of Supercapacitor Properties of Radio Frequency Sputter Binder‐Free and Nanosandwich WO₃/SiO₂/WO₃ Thin Film