Marigold micro-flower like NiCo<sub>2</sub>O<sub>4</sub> grown on flexible stainless-steel mesh as an electrode for supercapacitors

Kamble, Gokul P.; Kashale, Anil A.; Rasal, Akash S.; Mane, Seema A.; Chavan, Rutuja A.; Chang, Jia-Yaw; Ling, Yong‐Chien; Kolekar, Sanjay S.; Ghule, Anil V.

doi:10.1039/d0ra09524a

Cited by 30 publications

(14 citation statements)

References 54 publications

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“…4(a) exhibits two peaks at 856.9 and 875.4 eV corresponding to Ni 2p 2/3 and Ni 2p 1/2 , respectively, along with two shakeup satellite peaks indicating its multiple oxidation states. 18,19 The peaks at the binding energies of 856.2 and 873.8 eV are ascribed to Ni 2+ , whereas the peaks at 857.6 and 876.1 eV are ascribed to Ni 3+ . 6 Fig.…”

Section: Resultsmentioning

confidence: 99%

Structure-engineering of core–shell ZnCo₂O₄@NiO composites for high-performance asymmetric supercapacitors

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Structure-engineering of core–shell ZnCo₂O₄@NiO composites for high-performance asymmetric supercapacitors

et al. 2022

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“…This increase in R ct may be due to the disintegration of electrode material after 4000 GCD cycles, which subsequently decreases the specific capacitance. 38,44 The equivalent circuit diagram is presented as in the inset of Figure 8g. The CCO@CuO//rGO ASC device shows good cycling durability, and it retains 83% of the initial capacitance after 4000 charge−discharge cycles, as shown in Figure 8h.…”

Section: Resultsmentioning

confidence: 99%

CuCo₂O₄ Nanorods Coated with CuO Nanoneedles for Supercapacitor Applications

Kamble

Rasal

Gaikwad

et al. 2021

ACS Appl. Nano Mater.

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Herein, we report the chemical synthesis of a core−shell nanoarchitecture comprising CuCo 2 O 4 @CuO (CCO@ CuO) on a flexible stainless steel mesh substrate (FSSM) with CuCo 2 O 4 (core) and CuO (shell) by a simple, cost-efficient, additivefree hydrothermal deposition method, followed by successive ionic layer adsorption and reaction method for fabricating a flexible electrode for an asymmetric supercapacitor (ASC). The nanocomposite of CCO@CuO revealed a high surface area of 98.33 m 2 g −1 and the electrode delivered a high specific capacitance of 713 F g −1 at a high current density of 11 mA cm −2 , which was noted to be higher than those of the individual constituent CuO (436 F g −1 ) and CuCo 2 O 4 (443 F g −1 ) metal oxide electrodes. The CCO@CuO electrode demonstrated remarkable cycling stability (∼90% capacitance retention after 5000 charge−discharge cycles at 15 mA cm −2 ). The ASC device CCO@CuO//rGO (reduced graphene oxide) delivered a maximum energy density of 37.43 Wh kg −1 at a power density of 250 W kg −1 . The device revealed 83% capacitance retention after 4000 cycles. These results indicate that the CCO@CuO/FSSM electrode is a promising functional material for energy storage devices.

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“…In contrast to batteries, supercapacitors are energy-storage devices that can sustain a high power output for long durations. Because of their distinct advantages, such as long life, environmental friendliness, and high power densities, supercapacitors have received a lot of recognition. − For supercapacitors, a nanomaterial electrode with a higher specific capacitance and longer period stability is a good choice . Furthermore, supercapacitor expandable electrodes have proven to be very useful for fast energy storage and providing rationally high energy densities and quick charging capacity.…”

Section: Energy Applications Of Cqdsmentioning

confidence: 99%

“…100−102 For supercapacitors, a nanomaterial electrode with a higher specific capacitance and longer period stability is a good choice. 101 Furthermore, supercapacitor expandable electrodes have proven to be very useful for fast energy storage and providing rationally high energy densities and quick charging capacity. Despite current efforts, further research is needed to develop novel porous, conducting, and wide-surface-area-based carbon materials with higher specific capacitance and longer cycle stability.…”

Section: Energy Applications Of Cqdsmentioning

confidence: 99%

Carbon Quantum Dots for Energy Applications: A Review

Rasal

Yadav

et al. 2021

ACS Appl. Nano Mater.

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Carbon quantum dots (CQDs) are a class of carbon nanomaterials that have recently gained recognition as current entrants to traditional semiconductor quantum dots (QDs). CQDs have the desirable advantages of low toxicity, environmental friendliness, low cost, photostability, favorable charge transfer with enhanced electronic conductivity, and their comparable easy synthesis protocols. This article examines advancements in CQD research and development, with a focus on their synthesis, functionalization, and energy applications. Initially, various synthesis methods are discussed briefly with pros and cons. Herein, first top-down methods including arc discharge technique, laser ablation technique, plasma treatment, ultrasound synthesis technique, electrochemical technique, chemical exfoliation, and combustion were discussed briefly. The later section presents bottom-up (microwave synthesis, hydrothermal synthesis, thermal pyrolysis, and MOF template-assisted approach) and waste-derived CQDs synthesis methods. The next section is focused on the energy applications of CQDs including supercapacitors, lithium-ion batteries, photovoltaics, hydrogen (HER), and oxygen evolution reaction (OER). Finally, challenges and perspectives in this exciting and promising area are presented.

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Marigold micro-flower like NiCo₂O₄ grown on flexible stainless-steel mesh as an electrode for supercapacitors

Abstract: Binder-free marigold micro-flower like NiCo2O4 deposited on FSSM as electrode in ASC device (NiCo2O4//rGO) is a promising functional material for energy storage device.

Cited by 30 publications

References 54 publications

Structure-engineering of core–shell ZnCo₂O₄@NiO composites for high-performance asymmetric supercapacitors

Structure-engineering of core–shell ZnCo₂O₄@NiO composites for high-performance asymmetric supercapacitors

CuCo₂O₄ Nanorods Coated with CuO Nanoneedles for Supercapacitor Applications

Carbon Quantum Dots for Energy Applications: A Review

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Marigold micro-flower like NiCo2O4 grown on flexible stainless-steel mesh as an electrode for supercapacitors

Abstract: Binder-free marigold micro-flower like NiCo2O4 deposited on FSSM as electrode in ASC device (NiCo2O4//rGO) is a promising functional material for energy storage device.

Cited by 30 publications

References 54 publications

Structure-engineering of core–shell ZnCo2O4@NiO composites for high-performance asymmetric supercapacitors

Structure-engineering of core–shell ZnCo2O4@NiO composites for high-performance asymmetric supercapacitors

CuCo2O4 Nanorods Coated with CuO Nanoneedles for Supercapacitor Applications

Carbon Quantum Dots for Energy Applications: A Review

Contact Info

Product

Resources

About

Marigold micro-flower like NiCo₂O₄ grown on flexible stainless-steel mesh as an electrode for supercapacitors

Structure-engineering of core–shell ZnCo₂O₄@NiO composites for high-performance asymmetric supercapacitors

Structure-engineering of core–shell ZnCo₂O₄@NiO composites for high-performance asymmetric supercapacitors

CuCo₂O₄ Nanorods Coated with CuO Nanoneedles for Supercapacitor Applications