The rational design of bifunctional MOF-ZnFe2O4 hollow sphere-based nanocomposites for ultra-efficient electrochemical oxygen evolution reaction and high-performance symmetric supercapacitor electrodes
Supercapacitors have emerged as versatile energy storage devices, valued for their rapid charge-discharge capabilities and long cycle life. Concurrently, efficient electrocatalysts are essential for promoting the oxygen evolution reaction (OER) in sustainable energy applications. Inevitably, this st...
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my.uniten.dspace-362912025-03-03T15:41:49Z The rational design of bifunctional MOF-ZnFe2O4 hollow sphere-based nanocomposites for ultra-efficient electrochemical oxygen evolution reaction and high-performance symmetric supercapacitor electrodes Lee D.-E. Danish M. Husain A. Jo W.-K. 56605563300 57216220743 57215031715 7103322277 Capacitance Cyclic voltammetry Electric discharges Electrocatalysts Electrochemical electrodes Electrolysis Electrolytic reduction Energy efficiency Nanocomposites Organometallics Oxygen Renewable energy Scalability Spheres Supercapacitor Zinc compounds Bi-functional Binary nanocomposite Electrochemical oxygen High specific capacitances Hollow sphere Rational design Sustainable energy Thermal impregnations Ultra-efficient Water electrolysis Energy storage Supercapacitors have emerged as versatile energy storage devices, valued for their rapid charge-discharge capabilities and long cycle life. Concurrently, efficient electrocatalysts are essential for promoting the oxygen evolution reaction (OER) in sustainable energy applications. Inevitably, this study explores the integration of a Cobalt-Nickel (Co/Ni) based metal-organic framework [CoNi((?3-tp)2(?2-py)2 or CNTP] with ZnFe2O4 hollow spheres (ZHS) to create innovative CNTP/ZHS nanocomposites tailored for supercapacitor and electrocatalytic OER applications. Different weight percentages of CNTP/ZHS nanocomposites were synthesized through a facile and scalable method, and their electrochemical performance was rigorously assessed. Electrochemical characterization revealed that a 40 wt percentage CNTP/ZHS (40-CNTP/ZHS) electrode demonstrated a very high specific capacitance of 1519.2 Fg?1 at 1 Ag?1 and retained 92.6 % of its specific capacitance after 10000 cycles. Moreover, it delivered remarkably high specific capacitance (447.2 Fg?1) and energy density (62.1 WhKg?1) along with outstanding cyclic stability (97.5 % after 5000 galvanostatic charge-discharge cycles). It also exhibited excellent OER activity, with a very low overpotential (207 mV to attain a current density of 10 mAcm?2), a small Tafel slope (66.5 mVdec?1), and high stability over 2000 cyclic voltammetry cycles. These characteristics underscore the significant potential of renewable energy technologies, particularly for water electrolysis and sustainable energy conversion.1 ? 2024 Elsevier B.V. Final 2025-03-03T07:41:49Z 2025-03-03T07:41:49Z 2024 Article 10.1016/j.jallcom.2024.175048 2-s2.0-85195303118 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85195303118&doi=10.1016%2fj.jallcom.2024.175048&partnerID=40&md5=c6a31fbf28ed855fb528c005a68dd3a3 https://irepository.uniten.edu.my/handle/123456789/36291 1000 175048 Elsevier Ltd Scopus |
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Capacitance Cyclic voltammetry Electric discharges Electrocatalysts Electrochemical electrodes Electrolysis Electrolytic reduction Energy efficiency Nanocomposites Organometallics Oxygen Renewable energy Scalability Spheres Supercapacitor Zinc compounds Bi-functional Binary nanocomposite Electrochemical oxygen High specific capacitances Hollow sphere Rational design Sustainable energy Thermal impregnations Ultra-efficient Water electrolysis Energy storage |
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Capacitance Cyclic voltammetry Electric discharges Electrocatalysts Electrochemical electrodes Electrolysis Electrolytic reduction Energy efficiency Nanocomposites Organometallics Oxygen Renewable energy Scalability Spheres Supercapacitor Zinc compounds Bi-functional Binary nanocomposite Electrochemical oxygen High specific capacitances Hollow sphere Rational design Sustainable energy Thermal impregnations Ultra-efficient Water electrolysis Energy storage Lee D.-E. Danish M. Husain A. Jo W.-K. The rational design of bifunctional MOF-ZnFe2O4 hollow sphere-based nanocomposites for ultra-efficient electrochemical oxygen evolution reaction and high-performance symmetric supercapacitor electrodes |
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Supercapacitors have emerged as versatile energy storage devices, valued for their rapid charge-discharge capabilities and long cycle life. Concurrently, efficient electrocatalysts are essential for promoting the oxygen evolution reaction (OER) in sustainable energy applications. Inevitably, this study explores the integration of a Cobalt-Nickel (Co/Ni) based metal-organic framework [CoNi((?3-tp)2(?2-py)2 or CNTP] with ZnFe2O4 hollow spheres (ZHS) to create innovative CNTP/ZHS nanocomposites tailored for supercapacitor and electrocatalytic OER applications. Different weight percentages of CNTP/ZHS nanocomposites were synthesized through a facile and scalable method, and their electrochemical performance was rigorously assessed. Electrochemical characterization revealed that a 40 wt percentage CNTP/ZHS (40-CNTP/ZHS) electrode demonstrated a very high specific capacitance of 1519.2 Fg?1 at 1 Ag?1 and retained 92.6 % of its specific capacitance after 10000 cycles. Moreover, it delivered remarkably high specific capacitance (447.2 Fg?1) and energy density (62.1 WhKg?1) along with outstanding cyclic stability (97.5 % after 5000 galvanostatic charge-discharge cycles). It also exhibited excellent OER activity, with a very low overpotential (207 mV to attain a current density of 10 mAcm?2), a small Tafel slope (66.5 mVdec?1), and high stability over 2000 cyclic voltammetry cycles. These characteristics underscore the significant potential of renewable energy technologies, particularly for water electrolysis and sustainable energy conversion.1 ? 2024 Elsevier B.V. |
| author2 |
56605563300 |
| author_facet |
56605563300 Lee D.-E. Danish M. Husain A. Jo W.-K. |
| format |
Article |
| author |
Lee D.-E. Danish M. Husain A. Jo W.-K. |
| author_sort |
Lee D.-E. |
| title |
The rational design of bifunctional MOF-ZnFe2O4 hollow sphere-based nanocomposites for ultra-efficient electrochemical oxygen evolution reaction and high-performance symmetric supercapacitor electrodes |
| title_short |
The rational design of bifunctional MOF-ZnFe2O4 hollow sphere-based nanocomposites for ultra-efficient electrochemical oxygen evolution reaction and high-performance symmetric supercapacitor electrodes |
| title_full |
The rational design of bifunctional MOF-ZnFe2O4 hollow sphere-based nanocomposites for ultra-efficient electrochemical oxygen evolution reaction and high-performance symmetric supercapacitor electrodes |
| title_fullStr |
The rational design of bifunctional MOF-ZnFe2O4 hollow sphere-based nanocomposites for ultra-efficient electrochemical oxygen evolution reaction and high-performance symmetric supercapacitor electrodes |
| title_full_unstemmed |
The rational design of bifunctional MOF-ZnFe2O4 hollow sphere-based nanocomposites for ultra-efficient electrochemical oxygen evolution reaction and high-performance symmetric supercapacitor electrodes |
| title_sort |
rational design of bifunctional mof-znfe2o4 hollow sphere-based nanocomposites for ultra-efficient electrochemical oxygen evolution reaction and high-performance symmetric supercapacitor electrodes |
| publisher |
Elsevier Ltd |
| publishDate |
2025 |
| _version_ |
1825816221908467712 |
| score |
13.244413 |