Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium
Oxygen evolution reaction (OER) has arisen as an outstanding technology for energy generation, conversion, and storage. Herein, we investigated the synthesis of nickel-based hybrid metal oxides (NixM1−xOy) and their catalytic performance towards OER. NixM1−xOy catalysts were synthesized by solution...
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| Format: | Article |
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Royal Society of Chemistry
2022
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| Online Access: | http://psasir.upm.edu.my/id/eprint/103252/ |
| _version_ | 1848863971308732416 |
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| author | Abu Hatab, Aymen S. Ahmad, Yahia H. Abdul Rahman, Mohd B. Al-Qaradawi, Siham Y. |
| author_facet | Abu Hatab, Aymen S. Ahmad, Yahia H. Abdul Rahman, Mohd B. Al-Qaradawi, Siham Y. |
| author_sort | Abu Hatab, Aymen S. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Oxygen evolution reaction (OER) has arisen as an outstanding technology for energy generation, conversion, and storage. Herein, we investigated the synthesis of nickel-based hybrid metal oxides (NixM1−xOy) and their catalytic performance towards OER. NixM1−xOy catalysts were synthesized by solution combustion synthesis (SCS) using the metal nitrates as oxidizer and glycine as fuel. Scanning electron microscope (SEM) micrographs display a porous morphology for the hybrid binary NixM1−xOy, the common feature of combusted materials. X-ray diffraction (XRD) of NixM1−xOy depicted well-defined diffraction peaks, which confirms the crystalline nature of synthesized catalysts. The particle size of as-synthesized materials ranges between 20 and 30 nm with a mesoporous nature as revealed by N2-physisorption. The electrocatalytic performance of the as-prepared materials was evaluated towards OER in alkaline medium. Among them, NixCo1−xOy showed the best catalytic performance. For instance, it exhibited the lowest overpotential at a current density of 10 mA cm−2 (404 mV), onset potential (1.605 V), and Tafel slope (52.7 mV dec−1). The enhanced electrocatalytic performance of NixCo1−xOy was attributed to the synergism between cobalt and nickel and the alteration of the electronic structure of nickel. Also, NixCo1−xOy afforded the highest Ni3+/Ni2+ when compared to other electrocatalysts. This leads to higher oxidation states of Ni species, which promote and improve the electrocatalytic activity. |
| first_indexed | 2025-11-15T13:41:23Z |
| format | Article |
| id | upm-103252 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T13:41:23Z |
| publishDate | 2022 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1032522023-11-21T07:27:23Z http://psasir.upm.edu.my/id/eprint/103252/ Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium Abu Hatab, Aymen S. Ahmad, Yahia H. Abdul Rahman, Mohd B. Al-Qaradawi, Siham Y. Oxygen evolution reaction (OER) has arisen as an outstanding technology for energy generation, conversion, and storage. Herein, we investigated the synthesis of nickel-based hybrid metal oxides (NixM1−xOy) and their catalytic performance towards OER. NixM1−xOy catalysts were synthesized by solution combustion synthesis (SCS) using the metal nitrates as oxidizer and glycine as fuel. Scanning electron microscope (SEM) micrographs display a porous morphology for the hybrid binary NixM1−xOy, the common feature of combusted materials. X-ray diffraction (XRD) of NixM1−xOy depicted well-defined diffraction peaks, which confirms the crystalline nature of synthesized catalysts. The particle size of as-synthesized materials ranges between 20 and 30 nm with a mesoporous nature as revealed by N2-physisorption. The electrocatalytic performance of the as-prepared materials was evaluated towards OER in alkaline medium. Among them, NixCo1−xOy showed the best catalytic performance. For instance, it exhibited the lowest overpotential at a current density of 10 mA cm−2 (404 mV), onset potential (1.605 V), and Tafel slope (52.7 mV dec−1). The enhanced electrocatalytic performance of NixCo1−xOy was attributed to the synergism between cobalt and nickel and the alteration of the electronic structure of nickel. Also, NixCo1−xOy afforded the highest Ni3+/Ni2+ when compared to other electrocatalysts. This leads to higher oxidation states of Ni species, which promote and improve the electrocatalytic activity. Royal Society of Chemistry 2022 Article PeerReviewed Abu Hatab, Aymen S. and Ahmad, Yahia H. and Abdul Rahman, Mohd B. and Al-Qaradawi, Siham Y. (2022) Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium. RSC Advances, 12 (3). 1694 - 1703. ISSN 2046-2069 https://pubs.rsc.org/en/content/articlelanding/2022/RA/D1RA07304D 10.1039/d1ra07304d |
| spellingShingle | Abu Hatab, Aymen S. Ahmad, Yahia H. Abdul Rahman, Mohd B. Al-Qaradawi, Siham Y. Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium |
| title | Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium |
| title_full | Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium |
| title_fullStr | Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium |
| title_full_unstemmed | Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium |
| title_short | Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium |
| title_sort | solution combustion synthesis of ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium |
| url | http://psasir.upm.edu.my/id/eprint/103252/ http://psasir.upm.edu.my/id/eprint/103252/ http://psasir.upm.edu.my/id/eprint/103252/ |