Controllable preparation of core-shell Co3O4@CoNiS nanowires for ultra-long life asymmetric supercapacitors

Yan, Yuqi; Ding, Shixiang; Zhou, Xinyi; Hu, Qiang; Feng, Yi; Zheng, Qiaoji; Lin, Dunmin; Wei, Xiujuan

doi:10.1016/j.jallcom.2021.158941

Cited by 31 publications

(13 citation statements)

References 59 publications

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“…CV profiles of this device obtained at various bending angles were almost similar to each other (Figure d) which indicates the mechanical robustness and good flexibility of the fabricated device. The fabricated flexible device showed an energy density of 50.34 W h kg –1 at a power density of 1450 W kg –1 , which is equivalent and in some cases superior to that of some of the reported carbon-based ASC (Table S2) ,,,,− ,− and commercially available supercapacitors (3–9 W h kg –1 at 3000–10000 W kg –1 ). , The Ragone plot obtained from these values at numerous current densities is presented in Figure e. Illumination of 16 light-emitting diodes (LEDs) is shown in Figure f when four devices are connected in series.…”

Section: Results and Discussionmentioning

confidence: 92%

CoFe₂O₄ Nanoparticle Decorated Hierarchical Biomass Derived Porous Carbon Based Nanocomposites for High-Performance All-Solid-State Flexible Asymmetric Supercapacitor Devices

Gogoi

Makkar

Das

et al. 2022

ACS Appl. Electron. Mater.

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In this modern era of electronics possessing features like advanced compactness and wearability, flexible all-solid-state supercapacitor devices constructed by using biomass-derived materials are considered as suitable aspirants by virtue of their high energy density, power density, and good cyclic life. Herein, we have constructed a high-performance all-solid-state flexible asymmetric supercapacitor device using coconut fiber derived porous carbon as the anode and a nanocomposite composed of CoFe 2 O 4 nanoparticles (CF) immobilized within the pores of porous carbon (PC) as the cathode. The constructed device possessed a high energy density of 50.34 W h kg −1 at a power density of 1450 W kg −1 and good cycle life (retention of ∼91% specific capacitance (C S ) after ∼5000 cycles). The fabricated device retained its performance even after considerable physical deformation. These excellent features of this device can be credited to the synergy between the CF and PC nanomaterials. CF nanoparticles provide fast redox processes and good power delivery within a few seconds of time, whereas the high surface area (BET surface area ∼1323 m 2 g −1 ) porous carbon possessing structural porosity hosts the CF nanoparticles and also helps in faster ion transfer in the nanocomposite and provides mechanical robustness to the electrode. The results obtained from the present work encourage the augmentation of low-cost electrode material for highly efficient green energy-based electrochemical energy storage (EES) devices.

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Section: Results and Discussionmentioning

confidence: 92%

CoFe₂O₄ Nanoparticle Decorated Hierarchical Biomass Derived Porous Carbon Based Nanocomposites for High-Performance All-Solid-State Flexible Asymmetric Supercapacitor Devices

Gogoi

Makkar

Das

et al. 2022

ACS Appl. Electron. Mater.

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“…8c (Table S2†). 1,5,15,20,21,36,53–66 The device exhibited a high energy density value of 81.3 W h kg −1 at a power density of 1600 W kg −1 and 37.3 W h kg −1 even at a high power density of 9600 W kg −1 . A panel of a total of 65 LEDs was lighted by connecting four fabricated devices in order to demonstrate its lab-scale practical utility (Fig.…”

Section: Resultsmentioning

confidence: 99%

A high-performance flexible energy storage device from biomass-derived porous carbon supported MnCo₂O₄ nanorods and MnO₂ nanoscales

Gogoi

Karmur

Das

et al. 2022

Sustainable Energy Fuels

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“…The fabricated device has demonstrated its potentiality to deliver a high energy density of 65.8 W h kg –1 at a power density of 1500 W kg –1 , which is equivalent and, in various cases, superior to that of carbon-based ASC devices found in the literature (Table S2). ,,− ,,− ,,− Figure d portrays the optical image of the panel of 65 light-emitting diodes (LEDs) illuminated by four fabricated devices connected in series and demonstrates the potential of the all-solid-state flexible 80CF hs -20rGO s //rGO sp ASC device to be used in electronic applications.…”

Section: Resultsmentioning

confidence: 99%

CoFe₂O₄ Hollow Spheres-Decorated Three-Dimensional rGO Sponge for Highly Efficient Electrochemical Charge Storage Devices

2022

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The energy demand, the crisis of fossil fuels, and the increasing popularity of portable and wearable electronics in the global market have triggered the demand to develop high-performance flexible all-solid-state supercapacitors that are capable of delivering high energy at high power density as well as being safely entrenched in those electronics. Herein, we have designed a nanocomposite, 80CF hs -20rGO sp , which exhibits a high specific capacitance ( C S ) value of 1032 F g –1 at 3 A g –1 . Utilizing this nanocomposite as the cathode and reduced graphene oxide sponge (rGO sp ) as the anode, a flexible all-solid-state asymmetric device has been fabricated. In this device, poly(vinyl alcohol) (PVA) gel embedded with a mixture of 3 M KOH and 0.1 M K 4 [Fe(CN) 6 ] was used as an electrolyte cum separator. The fabricated device showed the capability to deliver an energy density of 65.8 W h kg –1 at a power density of 1500 W kg –1 and retained its capability even after various physical deformations. The device also exhibited a long cycle life and retained ∼96% of its C S value after 5000 cycles. Moreover, the fabricated flexible all-solid-state device successfully illuminated light-emitting diodes, which proved its potential use in real-life supercapacitor applications. The obtained results revealed the excellent electrochemical performances of the fabricated device and rendered it a promising candidate in the energy sector.

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Controllable preparation of core-shell Co3O4@CoNiS nanowires for ultra-long life asymmetric supercapacitors

Cited by 31 publications

References 59 publications

CoFe₂O₄ Nanoparticle Decorated Hierarchical Biomass Derived Porous Carbon Based Nanocomposites for High-Performance All-Solid-State Flexible Asymmetric Supercapacitor Devices

CoFe₂O₄ Nanoparticle Decorated Hierarchical Biomass Derived Porous Carbon Based Nanocomposites for High-Performance All-Solid-State Flexible Asymmetric Supercapacitor Devices

A high-performance flexible energy storage device from biomass-derived porous carbon supported MnCo₂O₄ nanorods and MnO₂ nanoscales

CoFe₂O₄ Hollow Spheres-Decorated Three-Dimensional rGO Sponge for Highly Efficient Electrochemical Charge Storage Devices

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Controllable preparation of core-shell Co3O4@CoNiS nanowires for ultra-long life asymmetric supercapacitors

Cited by 31 publications

References 59 publications

CoFe2O4 Nanoparticle Decorated Hierarchical Biomass Derived Porous Carbon Based Nanocomposites for High-Performance All-Solid-State Flexible Asymmetric Supercapacitor Devices

CoFe2O4 Nanoparticle Decorated Hierarchical Biomass Derived Porous Carbon Based Nanocomposites for High-Performance All-Solid-State Flexible Asymmetric Supercapacitor Devices

A high-performance flexible energy storage device from biomass-derived porous carbon supported MnCo2O4 nanorods and MnO2 nanoscales

CoFe2O4 Hollow Spheres-Decorated Three-Dimensional rGO Sponge for Highly Efficient Electrochemical Charge Storage Devices

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CoFe₂O₄ Nanoparticle Decorated Hierarchical Biomass Derived Porous Carbon Based Nanocomposites for High-Performance All-Solid-State Flexible Asymmetric Supercapacitor Devices

CoFe₂O₄ Nanoparticle Decorated Hierarchical Biomass Derived Porous Carbon Based Nanocomposites for High-Performance All-Solid-State Flexible Asymmetric Supercapacitor Devices

A high-performance flexible energy storage device from biomass-derived porous carbon supported MnCo₂O₄ nanorods and MnO₂ nanoscales

CoFe₂O₄ Hollow Spheres-Decorated Three-Dimensional rGO Sponge for Highly Efficient Electrochemical Charge Storage Devices