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Journal of Electrochemical Science and Engineering, Vol. 16 , 2026.

Izvorni znanstveni članak

https://doi.org/10.5599/jese.2621

Electrochemical performance evaluation of ZnCo2O4 nanoflakes for hybrid supercapacitors

Deependra Jhankal ; Department of Physics, Malaviya National Institute of Technology, Jaipur 302017, India and Department of Physics, School of Applied Science, Suresh Gyan Vihar University, Jaipur, 302017 India
Bhanu Yadav ; Department of Physics, Malaviya National Institute of Technology, Jaipur 302017, India
Preeti Shakya ; Materials Research Centre, Malaviya National Institute of Technology, Jaipur 302017, India
Mohammed Saquib Khan orcid id orcid.org/0000-0002-1418-1549 ; Department of Sustainable Energy Engineering, Indian Institute of Technology, Kanpur 208016 India
Krishna Kumar Jhankal ; Department of Chemistry, University of Rajasthan, Jaipur 302004, India
Kanupriya Sachdev ; Department of Physics, Malaviya National Institute of Technology, Jaipur 302017, India and Materials Research Centre, Malaviya National Institute of Technology, Jaipur 302017, India *

* Dopisni autor.

Puni tekst: engleski pdf 1.039 Kb

preuzimanja: 197

citiraj

Sažetak

This study focuses on the synthesis and characterization of zinc cobaltite (ZnCo2O4) as an electrode material for supercapacitor (SC) applications. ZnCo2O4 was synthesized via an efficient sol-gel method, followed by annealing. Morphological and structural character­ri­za­tions revealed that ZnCo2O4 forms as nanoflakes with a well-crystallized structure. Electro­chemical parameters of ZnCo2O4 were examined by various electrochemical techniques in a 3 M KOH aqueous electrolyte. The highest specific capacitance (Csp) of 321 F g-1 was obtained at a current density of 0.8 A g-1. The electrochemical performance of the ZnCo2O4 electrode is superior, owing to its porous nanoflake morphology, which provides numerous active sites and enables substantial charge storage. Moreover, multiple oxidation states of Zn and Co enhance redox reactions at the electrode surface, thereby improving the electrode's pseudocapa­citance. The superior electrochemical performance of ZnCo2O4 indicates that it is a promising cathode material for hybrid SC devices.

Ključne riječi

Bimetal oxide; sol-gel synthesis; specific capacitance; cyclic stability

Hrčak ID:

344865

URI

https://hrcak.srce.hr/344865

Datum izdavanja:

28.12.2025.

Posjeta: 349 *