Effect of synthesis route on the electrochemical performance of CoMnFeO4 nanoparticles as a novel supercapacitor electrode material

Ghadimi, Laleh Saleh; Arsalani, Nasser; Ahadzadeh, Iraj; Hajalilou, Abdollah; Abouzari‐Lotf, Ebrahim

doi:10.1016/j.apsusc.2019.07.183

Cited by 65 publications

(20 citation statements)

References 62 publications

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“…I signifies the discharging current (A), Δt represents the discharging time (s), ΔV denotes the potential window (V), and m exhibits the total mass of the electroactive material (g). 47,48 3. RESULTS AND DISCUSSION 3.1.…”

Section: Methodsmentioning

confidence: 99%

“…The electrochemical impedance spectroscopy (EIS) measurements were performed in the frequency range 100 kHz–0.01 Hz by application of a 10 mV amplitude excitation AC voltage at open circuit potential (OCP) mode. The specific capacitance ( C t , F g –1 ) values of materials were estimated with eq : I signifies the discharging current (A), Δ t represents the discharging time (s), Δ V denotes the potential window (V), and m exhibits the total mass of the electroactive material (g). , …”

Section: Methodsmentioning

confidence: 99%

“…Currently, ongoing reduction in fossil fuel sources on the one hand and increasing atmospheric pollutants on the other hand have encouraged scientists to develop renewable alternatives to fossil fuels, e.g., wind and solar energies. In this context, batteries and capacitors with high power densities, flexibility, and optimum life cycles are the core of future technology for the storage of renewable energies. , More recently, supercapacitors have attracted extensive consideration thanks to their considerable power densities and elongated cycling lifetimes compared with commonplace rechargeable secondary batteries; they also have higher mass-based energy densities compared to traditional electrostatic capacitors. − At this time, most commercially available supercapacitors are symmetric electric double-layer capacitors mainly based on active carbon with mass-based energy densities of about 10 Wh kg –1 , which is notably lower than that of usual battery technologies. − Hence, enhancing the energy densities of the currently available supercapacitor technologies is the most significant subject.…”

Section: Introductionmentioning

confidence: 99%

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Green Synthesized Carbon Quantum Dots/Cobalt Sulfide Nanocomposite as Efficient Electrode Material for Supercapacitors

et al. 2021

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In the present work, carbon quantum dots/CoS2 nanocomposite (CQDs/CoS2) was prepared through a solvent-free ball milling route followed by solvothermal treatment. The CQDs were prepared first by a green catalyst-free microwave-assisted procedure from glycerol, as a single precursor, with a quantum yield of ∼16%. Then, a ball mill–hydrothermal combination method was used to synthesize CQDs/CoS2 with edged bricklike morphology. Benefiting from advantageous features of large specific surface area (427.2 m2 g–1), unique nanostructure with high mesoporosity, and greater electronic conductivity, the as-synthesized CQDs/CoS2 nanocomposite electrode material displays a rather high specific pseudocapacitance, about 808 F g–1 at 1 A g–1 current density, a high rate capability with 83.9% capacity retention rate at 20 A g–1, and good cycling stability of 98.75% over 10 000 charge/discharge cycles at 1 A g–1. The attained results support the suitability of CQDs/CoS2 nanocomposite as a desired material for future high-performance electrochemical energy storage devices.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Green Synthesized Carbon Quantum Dots/Cobalt Sulfide Nanocomposite as Efficient Electrode Material for Supercapacitors

et al. 2021

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“…Different binary and ternary metal oxides have been investigated as electrode materials for supercapacitors and it was reported that the electrochemical performance was mostly dependent on crystallite size, pore size and morphology. [24,[28][29][30] Based on the above considerations, in this study an attempt has been made to synthesize spinel based high entropy oxide (SP-HEO) containing up to five different elements in equiatomic amounts. Reverse co-precipitation (RCP), a wet chemical approach, was used to synthesize SP-HEO powders due to the inherent homogeneity during nucleation and growth.…”

Section: Introductionmentioning

confidence: 99%

“…Transition metal oxides in spinel form perform well with high specific capacity because of the contributions from its complex chemical compositions and its synergetic effects. Different binary and ternary metal oxides have been investigated as electrode materials for supercapacitors and it was reported that the electrochemical performance was mostly dependent on crystallite size, pore size and morphology [24,28–30] …”

Section: Introductionmentioning

confidence: 99%

Structural and Electrochemical Investigations on Nanocrystalline High Entropy Spinel Oxides for Battery‐Like Supercapacitor Applications

et al. 2022

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High entropy oxides (HEOs) are a novel class of materials with a stable single‐phase structure that is often entropy stabilized and possess many interesting functional properties. In this work, we report a nanocrystalline spinel‐based high entropy oxide (SP‐HEO) ‐ (Al0.2Co0.2Cr0.2Mn0.2Ni0.2)3O4 and present an assessment of its electrochemical performance. A reverse co‐precipitation (RCP) method was used for synthesis, followed by a suitable heat‐treatment/calcination step that was adjusted to form a single‐phase nanocrystalline powder. Structural characterisation revealed that the single‐phase system was stable upto 850 °C. Nitrogen adsorption studies showed a large specific surface area of 90 m2 g−1 in the case of the SP‐HEO calcined at 550 °C. The SP‐HEO powders were investigated as electrodes for battery‐like supercapacitor behaviour in an aqueous alkaline electrolyte ‐ KOH. The SP‐HEO powder calcined at 550 °C exhibited the highest specific capacity of 318 mAh g−1 at a current density of 1 A g−1. The high electrochemical performance of the mesoporous SP‐HEO makes it a promising electrode material for energy storage devices.

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Sustainable Substitutes for Fluorinated Electrolytes in Electrochemical Capacitors

Yaghoubi,

Mousavi,

Hashemi

et al. 2023

Sustainable Materials for Electrochemical Capacitors

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Effect of synthesis route on the electrochemical performance of CoMnFeO4 nanoparticles as a novel supercapacitor electrode material

Cited by 65 publications

References 62 publications

Green Synthesized Carbon Quantum Dots/Cobalt Sulfide Nanocomposite as Efficient Electrode Material for Supercapacitors

Green Synthesized Carbon Quantum Dots/Cobalt Sulfide Nanocomposite as Efficient Electrode Material for Supercapacitors

Structural and Electrochemical Investigations on Nanocrystalline High Entropy Spinel Oxides for Battery‐Like Supercapacitor Applications

Sustainable Substitutes for Fluorinated Electrolytes in Electrochemical Capacitors

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