Synthesis and electrochemical performance of nickel-based electrodes for supercapacitor applications

KORKMAZ C., ÇOBAN B., Zaman B. T., BAKIRDERE S., GENÇTEN M.

Journal of Materials Science: Materials in Electronics, cilt.36, sa.21, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 36 Sayı: 21
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1007/s10854-025-15170-7
  • Dergi Adı: Journal of Materials Science: Materials in Electronics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, MEDLINE, Metadex, Civil Engineering Abstracts
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

In this study, the electrochemical performance of nickel oxide-based magnetic nanoparticles (NiOMNP) and nanoflower-shaped Ni(OH)2 were used as electrodes, and was investigated for supercapacitor applications. Galvanostatic charge–discharge (GCD) measurements demonstrated that both electrodes exhibited excellent cycling stability with NiOMNP retaining 96.43% of its initial capacitance after 15,000 cycles, while Ni(OH)2 showed an increase in capacitance to 129.16% due to a self-activation process. The superior long-term stability of NiOMNP was attributed to its structural robustness, whereas the capacitance enhancement in Ni(OH)2 was linked to improved electrolyte–electrode interaction over time. The areal capacitance values of NiOMNP and Ni(OH)2 reached 91 mF cm−2 and 74 mF cm−2, respectively at 10 mV s−1, demonstrating their high charge storage capability. Comparison with the literature data indicated that the electrodes synthesized in this study outperformed many previously reported NiOMNP and Ni(OH)2-based electrodes. These findings highlight the potential of Ni-based electrodes for high-performance supercapacitor applications.