Role of the heterogenous structure of ZnO/MnFeO3 in enhancing Bi-functional electrocatalyst for alkaline water electrolysis
An electrocatalyst, Zn-doped 3D porous MnFeO _3 , is developed and investigated for its efficacy in alkaline water electrolysis. The electrocatalyst is synthesized through a sol–gel method and characterized comprehensively. Incorporating zinc (Zn) doping enhances the electrocatalytic activity of the...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2024-01-01
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| Series: | Nano Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2632-959X/ad9761 |
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| Summary: | An electrocatalyst, Zn-doped 3D porous MnFeO _3 , is developed and investigated for its efficacy in alkaline water electrolysis. The electrocatalyst is synthesized through a sol–gel method and characterized comprehensively. Incorporating zinc (Zn) doping enhances the electrocatalytic activity of the MnFeO _3 structure, rendering it suitable for bifunctional performance in alkaline water electrolysis. The Zn-doped 3D porous MnFeO _3 was studied electrochemically, and the results showed that it has a very low overpotential of 460 mV for OER and 441 mV for HER in order to achieve a current density of 100 mA cm ^−2 , conducted in a 1 M KOH medium. The catalyst’s porous 3D structure offers a large surface area, enhancing its ability to interact with the electrolyte and promote H _2 and O _2 gas evolution. The Zn-doped 3D porous MnFeO _3 exhibits improved stability for 24 h, with only a 17% loss in current density at 10 mA cm ^−2 . The electrochemical performance of the Zn-doped 3D porous MnFeO _3 electrocatalyst is evaluated through various electrochemical techniques, highlighting its promising potential for practical applications in alkaline water electrolysis systems. |
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| ISSN: | 2632-959X |