3D NiO nanowires@NiO nanosheets core-shell structures grown on nickel foam for high performance supercapacitor electrode

Ali, Awais; Ammar, Muhammad; Ahmad, Mahmood; Ahmed, Toheed; Ali, Muddassir; Waqas, M.; Amin, Muhammad; Rasheed, Aamir

doi:10.1016/j.jelechem.2019.113710

Cited by 55 publications

(23 citation statements)

References 42 publications

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“…In Figure 5e, the GCD curves of the Ni@a-SnO x NWs sample at various current densities (0.1-2 A•g −1 ) are illustrated. In general, the charge and discharge times always decrease with the increase of current density [39]. As is seen in Figure 5e, the Ni@a-SnO x NWs sample has an almost identical shape of GCD curves, indicating that the redox reaction is reversible and the material has good capacitive properties [39,40].…”

Section: Electrochemical Performancementioning

confidence: 71%

“…In general, the charge and discharge times always decrease with the increase of current density [39]. As is seen in Figure 5e, the Ni@a-SnO x NWs sample has an almost identical shape of GCD curves, indicating that the redox reaction is reversible and the material has good capacitive properties [39,40]. Moreover, the corresponding specific capacitances of the Ni@a-SnO x NWs sample at various current densities were calculated from the discharge curves, and their results are illustrated in Figure 5f.…”

Section: Electrochemical Performancementioning

confidence: 97%

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Ni Foam-Supported Tin Oxide Nanowall Array: An Integrated Supercapacitor Anode

et al. 2021

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A novel product consisting of a homogeneous tin oxide nanowall array with abundant oxygen deficiencies and partial Ni-Sn alloying onto a Ni foam substrate was successfully prepared using a facile solvothermal synthesis process with subsequent thermal treatment in a reductive atmosphere. Such a product could be directly used as integrated anodes for supercapacitors, which showed outstanding electrochemical properties with a maximum specific capacitance of 31.50 mAh·g−1 at 0.1 A·g−1, as well as good cycling performance, with a 1.35-fold increase in capacitance after 10,000 cycles. An asymmetric supercapacitor composed of the obtained product as the anode and activated carbon as the cathode was shown to achieve a high potential window of 1.4 V. The excellent electrochemical performance of the obtained product is mainly ascribed to the hierarchical structure provided by the integrated, vertically grown nanowall array on 3D Ni foam, the existence of oxygen deficiency and the formation of Ni-Sn alloys in the nanostructures. This work provides a general strategy for preparing other high-performance metal oxide electrodes for electrochemical applications.

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Section: Electrochemical Performancementioning

confidence: 71%

Section: Electrochemical Performancementioning

confidence: 97%

Ni Foam-Supported Tin Oxide Nanowall Array: An Integrated Supercapacitor Anode

et al. 2021

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“…The peaks of C might be from CO 2 absorbed on the surface of the sample exposed to the air and adventitious hydrocarbon from the instrument itself . For NiO, the peaks at 853.6 and 855.4 eV are ascribed to Ni 2p 3/2 , and the peaks at 871.2 and 872.6 eV belong to Ni 2p 1/2 , which correspond to Ni 2+ ions from NiO . The peaks located at 860.8 and 878.9 eV are matched with Ni 2p 3/2 and Ni 2p 1/2 , which correspond with spin-orbit levels of NiO .…”

Section: Resultsmentioning

confidence: 91%

“…23 For NiO, the peaks at 853.6 and 855.4 eV are ascribed to Ni 2p 3/2 , and the peaks at 871.2 and 872.6 eV belong to Ni 2p 1/2 , which correspond to Ni 2+ ions from NiO. 24 The peaks located at 860.8 and 878.9 eV are matched with Ni 2p 3/2 and Ni 2p 1/2 , which correspond with spin-orbit levels of NiO. 25 Ni 2p 1/2 , respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Fabrication of Three-Dimensional Porous NiO/Amorphous Ni(OH)₂ Composites for Supercapacitors

et al. 2020

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Three-dimensional porous NiO/Ni(OH) 2 composites consisting of NiO nanoparticles and amorphous Ni(OH) 2 nanosheets were prepared successfully for supercapacitors. NiO nanoparticles were dispersed uniformly among Ni(OH) 2 nanosheets. The capacitance of the composites reached 1375.45 F g −1 at 0.5A g −1 , which was much higher than that of pure NiO and Ni(OH) 2 . After 1000 cycles, 95.5% of the capacitance of composites was retained. Moreover, an NiO/Ni(OH) 2 -2//AC device was fabricated and exhibited a prominent energy density of 28.5 Wh kg −1 at a power density of 450 W kg −1 and even 13.8 Wh kg −1 at 2258.2 W kg −1 . A light-emitting diode can easily be lit using the device, demonstrating its application. The enhanced capacitance performance of the NiO/Ni(OH) 2 hierarchical structure was ascribed to its tremendous surface area and amorphous characteristics.

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“…14,15 This binder-free electrode can avoid the addition of conductive agents and adhesives and enable the electroactive material to fully contact the electrolyte, which is beneficial to enhance ion transmission and improve the utilization rate of electroactive material. 16–19 Besides, partial replacement of manganese sites by some elements is considered to be a very effective method in improving the electrochemical properties. Recently, it has been reported in the literature that partial substitution of Co 2+ , Ni 2+ or Zn 2+ for manganese sites 12,20–23 can improve its capacity performance to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

The direct growth of Mn_0.6Ni_0.4CO₃ nanosheet assemblies on Ni foam for high-performance supercapacitor electrodes

2022

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3D NiO nanowires@NiO nanosheets core-shell structures grown on nickel foam for high performance supercapacitor electrode

Cited by 55 publications

References 42 publications

Ni Foam-Supported Tin Oxide Nanowall Array: An Integrated Supercapacitor Anode

Ni Foam-Supported Tin Oxide Nanowall Array: An Integrated Supercapacitor Anode

Fabrication of Three-Dimensional Porous NiO/Amorphous Ni(OH)₂ Composites for Supercapacitors

The direct growth of Mn_0.6Ni_0.4CO₃ nanosheet assemblies on Ni foam for high-performance supercapacitor electrodes

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3D NiO nanowires@NiO nanosheets core-shell structures grown on nickel foam for high performance supercapacitor electrode

Cited by 55 publications

References 42 publications

Ni Foam-Supported Tin Oxide Nanowall Array: An Integrated Supercapacitor Anode

Ni Foam-Supported Tin Oxide Nanowall Array: An Integrated Supercapacitor Anode

Fabrication of Three-Dimensional Porous NiO/Amorphous Ni(OH)2 Composites for Supercapacitors

The direct growth of Mn0.6Ni0.4CO3 nanosheet assemblies on Ni foam for high-performance supercapacitor electrodes

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Product

Resources

About

Fabrication of Three-Dimensional Porous NiO/Amorphous Ni(OH)₂ Composites for Supercapacitors

The direct growth of Mn_0.6Ni_0.4CO₃ nanosheet assemblies on Ni foam for high-performance supercapacitor electrodes