MOF derived NiCo2O4 nanosheets for high performance asymmetric supercapacitor

Salunkhe, Amruta D.; Pawar, Panchshila S.; Pagare, Pavan K.; Kadam, A.N.; Katkar, Pranav K.; Torane, A. P.

doi:10.1016/j.jelechem.2023.117475

Cited by 15 publications

(4 citation statements)

References 67 publications

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“…In CV plots, peak currents are influenced by sweep rate, which is controlled by capacitive and diffusive methods. There have been various methods reported [42,43] for denoising diffusive and capacitive procedures for pseudocapacitive electrodes. A generalized equation for electrokinetic research using CV experiments at various sweep speeds was specifically proposed by Dunn and colleagues.…”

Section: Symmetric Ultracapacitor Device (Sud)mentioning

confidence: 99%

Excellent electrochemical performance of N and Mn doped NiCo₂O₄ functional nanostructures: an effective approach for symmetric supercapacitor application

Sasmal,

Nayak,

Khan

et al. 2024

Phys. Scr.

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In supercapacitors (SCs), cobaltite spinel is considered as an excellent electrode material because it is abundant on earth, cost-effective, and theoretically capable of achieving high capacitance values. However, there are number of factors that prevent spinel cobaltite from achieving its maximum theoretical specific capacitance, including low electrical conductivity, insufficient active sites, and slow charge transport. For these reasons, it is necessary to simplify the structural and compositional design to overcome these limitations. An efficient solvothermal method followed by pyrolysis was successfully used to shape NiCo2O4 nanoflowers doped with N (Nitrogen) and Mn (Manganese). In addition to increasing the ion diffusion resistance and charge transfer resistance, N and Mn-doped NiCo2O4 provides an electrical conductivity system. The optimized N, Co, and Mn4 (NCoMn4) nanoflowers (4 wt% Mn-doped NiCo2O4) exhibits maximum specific capacitance of 269Fg−1 at 1Ag−1 current density with an exceptional retention of capacitance 92% after 5,000 uninterrupted cycles in the Na2SO4 media. The electrokinetic analysis of NCoMn4 further indicates that overall charge is stored predominantly through capacitance, as compared with other electrodes. It is also worth noting that the as-fabricated symmetric supercapacitor delivers the maximum energy density of 36.11 Whkg−1 at a power density of 1.04 kWkg−1 at 1 Ag−1 current density. This work opens a new path to develop hybrid electrodes for enhanced supercapacitor applications and will specify an efficient method for improving the charge transfer capability.

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Section: Symmetric Ultracapacitor Device (Sud)mentioning

confidence: 99%

Excellent electrochemical performance of N and Mn doped NiCo₂O₄ functional nanostructures: an effective approach for symmetric supercapacitor application

Sasmal,

Nayak,

Khan

et al. 2024

Phys. Scr.

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“…Generally, multi-metal compounds can be divided into multi-metal oxides, sulfides, and hydroxides. Multi-metal oxides, such as NiCo 2 O 4 [ 121 , 122 , 123 ], ZnCo 2 O 4 [ 124 , 125 , 126 , 127 ], MnMoO 4 [ 128 , 129 , 130 ], and CoMoO 4 [ 131 , 132 , 133 , 134 ], have been widely explored for energy conversion and storage. Among these multi-metal oxides, the NiCo 2 O 4 nanomaterials have attracted increasing attention due to their merits of higher electrical conductivity, and higher electrochemical activity, which would offer richer redox reactions, including contributions from both Ni 2+ /Ni 3+ and Co 3+ /Co 4+ redox couples in the materials [ 121 , 122 , 123 ].…”

Section: Recent Advances In Materials For Hybrid Supercapacitorsmentioning

confidence: 99%

“…Multi-metal oxides, such as NiCo 2 O 4 [ 121 , 122 , 123 ], ZnCo 2 O 4 [ 124 , 125 , 126 , 127 ], MnMoO 4 [ 128 , 129 , 130 ], and CoMoO 4 [ 131 , 132 , 133 , 134 ], have been widely explored for energy conversion and storage. Among these multi-metal oxides, the NiCo 2 O 4 nanomaterials have attracted increasing attention due to their merits of higher electrical conductivity, and higher electrochemical activity, which would offer richer redox reactions, including contributions from both Ni 2+ /Ni 3+ and Co 3+ /Co 4+ redox couples in the materials [ 121 , 122 , 123 ]. For example, Shen et al [ 135 ] that reported the highly uniform NiCo 2 O 4 hollow spheres exhibited a high specific capacity of 541 C g −1 at 1 A g −1 , and excellent rate performance (74.8% of capacity retention from 1 A g −1 to 15 A g −1 ).…”

Section: Recent Advances In Materials For Hybrid Supercapacitorsmentioning

confidence: 99%

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Du,

Lin,

Wang

et al. 2023

Molecules

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Currently, energy storage systems are of great importance in daily life due to our dependence on portable electronic devices and hybrid electric vehicles. Among these energy storage systems, hybrid supercapacitor devices, constructed from a battery-type positive electrode and a capacitor-type negative electrode, have attracted widespread interest due to their potential applications. In general, they have a high energy density, a long cycling life, high safety, and environmental friendliness. This review first addresses the recent developments in state-of-the-art electrode materials, the structural design of electrodes, and the optimization of electrode performance. Then we summarize the possible classification of hybrid supercapacitor devices, and their potential applications. Finally, the fundamental theoretical aspects, charge-storage mechanism, and future developing trends are discussed. This review is intended to provide future research directions for the next generation of high-performance energy storage devices.

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“…However, it has been observed that the I-V characteristics of MOF-based electrodes often exhibit multiple broad peaks, indicating the occurrence of surface redox reactions. To make these redox peaks more distinctive, increasing the surface area of the MOF-based electrodes is essential [17][18][19][20]. This can be achieved through a combination of different materials or by adopting suitable processing methodologies.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Supercapacitor Electrodes Based on MIL-101(Fe) Metal-Organic Framework: Evaluating Electrochemical Performance through Hydrothermal and Microwave-Assisted Synthesis

Akkinepally,

Kumar,

Reddy

et al. 2023

Crystals

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Supercapacitors have garnered substantial interest owing to their capacity to deliver power effectively for short-term applications. However, current supercapacitors suffer from limited stability and low-capacity storage. Metal-organic frameworks (MOFs) have emerged as a promising solution due to their high surface area and abundant active redox sites. MOF-based electrodes combined with aqueous based electrolytes have shown potential to enhance supercapacitor performance. While there is limited literature on MIL-101(Fe) MOF-based electrodes, a comparative study was conducted to investigate the supercapacitor performance of MIL-101(Fe) electrodes synthesized using hydrothermal and microwave-assisted processes. Processing parameters, such as the method used, alter the microstructure, morphology, and uniformity of supramolecular chemistry, impacting electrochemical characteristics. This study aimed to determine the active redox reactions, chemical stability, surface area, adsorption characteristics, and electrochemical characteristics of the electrodes. The electrodes from hydrothermal synthesis [MF(ht)] exhibited excellent electrochemical activity in comparison to the microwave-assisted [MF(m)] electrodes in the three-electrode configuration. At a high current density of 7 A/g, the MF(ht) electrode displayed a remarkable specific capacitance of 775.6 F/g and a good cyclic stability (82% @ 10 A/g) after 5000 galvanostatic charge–discharge cycles. At a current density of 1 A/g, the two-electrode configuration of MF(ht) yielded a high energy density of 74.7 Wh/kg at a power density of 2160 W/kg and a decent cyclic stability after 5000 cycles. The results suggest that the MF(ht) electrodes possess remarkable electrochemical properties that make them a promising candidate for advanced applications in energy storage.

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MOF derived NiCo2O4 nanosheets for high performance asymmetric supercapacitor

Cited by 15 publications

References 67 publications

Excellent electrochemical performance of N and Mn doped NiCo₂O₄ functional nanostructures: an effective approach for symmetric supercapacitor application

Excellent electrochemical performance of N and Mn doped NiCo₂O₄ functional nanostructures: an effective approach for symmetric supercapacitor application

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Investigation of Supercapacitor Electrodes Based on MIL-101(Fe) Metal-Organic Framework: Evaluating Electrochemical Performance through Hydrothermal and Microwave-Assisted Synthesis

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MOF derived NiCo2O4 nanosheets for high performance asymmetric supercapacitor

Cited by 15 publications

References 67 publications

Excellent electrochemical performance of N and Mn doped NiCo2O4 functional nanostructures: an effective approach for symmetric supercapacitor application

Excellent electrochemical performance of N and Mn doped NiCo2O4 functional nanostructures: an effective approach for symmetric supercapacitor application

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Investigation of Supercapacitor Electrodes Based on MIL-101(Fe) Metal-Organic Framework: Evaluating Electrochemical Performance through Hydrothermal and Microwave-Assisted Synthesis

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Excellent electrochemical performance of N and Mn doped NiCo₂O₄ functional nanostructures: an effective approach for symmetric supercapacitor application

Excellent electrochemical performance of N and Mn doped NiCo₂O₄ functional nanostructures: an effective approach for symmetric supercapacitor application