Synthesis and Characterization of NiO, Ni(OH)2, and NiS Nanoparticles as Effective Electrode Materials for Supercapacitors.
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| Title: | Synthesis and Characterization of NiO, Ni(OH) |
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| Authors: | Mohanasundari, M.1 (AUTHOR), Prabha, D.1 (AUTHOR) prabha@psgcas.ac.in, Mobika, J.2 (AUTHOR), Jayanalina, T.2 (AUTHOR), Sivasankari, G.1 (AUTHOR) |
| Source: | Journal of Electronic Materials. Dec2024, Vol. 53 Issue 12, p7712-7725. 14p. |
| Subjects: | Face centered cubic structure, Nickel sulfide, Electrochemical analysis, X-ray diffraction, Molecular structure, Nickel oxides, Nickel oxide |
| Abstract: | Nickel oxide (NiO), nickel hydroxide (Ni(OH)2), and nickel sulfide (NiS) nanoparticles have been fabricated using a simple co-precipitation method. The effect of different structures and morphologies of the prepared nanoparticles on a supercapacitor have been investigated. The prepared nanoparticles were characterized by UV, XRD, FESEM, and EDAX. The XRD demonstrated face centered cubic (FCC), hexagonal, and rhombohedral molecular structures of the nanoparticles. The FESEM analysis found a non-uniform aggregated spherical morphology of NiO, a rock-like morphology of Ni(OH)2, and an irregular spherical morphology of NiS. In KOH electrolyte, NiO stainless-steel electrodes showed a better performance, exhibiting a high specific capacitance of 438 F/g with a good cycling stability of 87% after 1000 cycles. NiO has the lowest conducting resistance among the three nanoparticles, was effectively optimized as a superior electrode, and yielded the greatest pseudo-capacitance by carbon-free electrode fabrication. This study suggests simple ways to enhance a supercapacitor's electrochemical characteristics. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Nickel oxide (NiO), nickel hydroxide (Ni(OH)2), and nickel sulfide (NiS) nanoparticles have been fabricated using a simple co-precipitation method. The effect of different structures and morphologies of the prepared nanoparticles on a supercapacitor have been investigated. The prepared nanoparticles were characterized by UV, XRD, FESEM, and EDAX. The XRD demonstrated face centered cubic (FCC), hexagonal, and rhombohedral molecular structures of the nanoparticles. The FESEM analysis found a non-uniform aggregated spherical morphology of NiO, a rock-like morphology of Ni(OH)2, and an irregular spherical morphology of NiS. In KOH electrolyte, NiO stainless-steel electrodes showed a better performance, exhibiting a high specific capacitance of 438 F/g with a good cycling stability of 87% after 1000 cycles. NiO has the lowest conducting resistance among the three nanoparticles, was effectively optimized as a superior electrode, and yielded the greatest pseudo-capacitance by carbon-free electrode fabrication. This study suggests simple ways to enhance a supercapacitor's electrochemical characteristics. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 03615235 |
| DOI: | 10.1007/s11664-024-11507-w |
