Evaluating the role of current collectors in supercapacitor electrodes with NiCo2O4 nanospheres

Yadav, Sarita; Gupta, Yachana; Rana, Abhimanyu; Devi, Ambika

doi:10.1016/j.jpcs.2023.111347

Cited by 3 publications

(1 citation statement)

References 60 publications

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“…On the other hand, NiMn 2 O 4 /GCE exhibited some capacitance (33 F/g at 20 mV/s), but much less than the value obtained with NiMn 2 O 4 /NF (165 F/g at 20 mV/s) ( Figure 3 ). Yadav et al also obtained better capacitance results when Ni foam was used [ 65 ]. The conclusion can be reached that most of the current response actually originated from the redox reactions of Ni foam.…”

Section: Resultsmentioning

confidence: 99%

Supercapacitor Electrodes: Is Nickel Foam the Right Substrate for Active Materials?

Dojčinović,

Stojković Simatović,

Nikolić

2024

Materials

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Ni foam is an extensively used current collector and substrate in investigations of electrochemically active materials such as supercapacitors and electrocatalysts for oxygen and hydrogen evolution reactions. This material is relatively cheap, porous, and conductive and has a large specific surface area, all of which make it a good substrate. We investigated Ni-Mg ferrites and NiMn2O4 as active materials for electrochemical energy storage. These materials, when loaded on Ni foam, gave promising capacitance values: 172 F/g (at 2 mV/s) for NiMn2O4 in 6 M KOH and 242 F/g (at 2 mV/s) for MgFe2O4 in 3 M KOH. Nevertheless, during the authors’ work, many experimental problems occurred. Inconsistencies in the results directed further investigation towards measuring the capacitance of the active materials using GCE and platinum electrodes as substrates to discover if Ni foam was the culprit of the inconsistencies. When non-nickel substrates were used, both NiMn2O4 and MgFe2O4 showed reduced capacitance. Experimental problems associated with the utilization of Ni foam as a substrate for active materials in supercapacitor electrodes are discussed here, combined with other problems already addressed in the scientific literature.

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Section: Resultsmentioning

confidence: 99%

Supercapacitor Electrodes: Is Nickel Foam the Right Substrate for Active Materials?

Dojčinović,

Stojković Simatović,

Nikolić

2024

Materials

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Recent Developments in the Materials and Miniaturization of Supercapacitors

Yadav,

Sanjay Khone,

Ritu

et al. 2024

ChemNanoMat

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High‐performing energy storage systems are becoming more and more necessary due to the rapid growth of renewable energy harvesting technology. To keep pace with it, supercapacitors have emerged a promising energy storage technology providing high power density and long cycle life. In an urge to enhance the energy density without sacrificing the power density, enormous research is going on the exploration of high‐performance electrode material. Huge modifications in the present synthesis routes and innovations in the new techniques may attribute to the large‐scale production of potential electrode materials for supercapacitors. This review focuses on the recent advancement carried out for several potential electrode materials for supercapacitors and device miniaturization.

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Synthesis of highly porous hybrid nanocomposite of hemp derived carbon nanosheet/carbon nanotube/manganese cobalt oxide for asymmetric supercapacitor

Kumari,

Joy,

Saren

et al. 2024

Materials Chemistry and Physics

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Evaluating the role of current collectors in supercapacitor electrodes with NiCo2O4 nanospheres

Cited by 3 publications

References 60 publications

Supercapacitor Electrodes: Is Nickel Foam the Right Substrate for Active Materials?

Supercapacitor Electrodes: Is Nickel Foam the Right Substrate for Active Materials?

Recent Developments in the Materials and Miniaturization of Supercapacitors

Synthesis of highly porous hybrid nanocomposite of hemp derived carbon nanosheet/carbon nanotube/manganese cobalt oxide for asymmetric supercapacitor

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