عرض بسيط للتسجيلة

المؤلفAbu Hatab, Aymen S
المؤلفAhmad, Yahia H
المؤلفAbdul Rahman, Mohd B
المؤلفAl-Qaradawi, Siham Y
تاريخ الإتاحة2022-01-25T04:40:23Z
تاريخ النشر2022-01
اسم المنشورRSC Advances
المعرّفhttp://dx.doi.org/10.1039/D1RA07304D
الاقتباسHatab, A. S. A., Ahmad, Y. H., Rahman, M. B. A., & Al-Qaradawi, S. Y. (2022). Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium. RSC Advances, 12(3), 1694-1703.
معرّف المصادر الموحدhttp://hdl.handle.net/10576/25904
الملخصOxygen 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.
راعي المشروعThe authors acknowledge the technical support of Central Laboratories Unit (CLU), Center for Advanced Materials (CAM), and Gas Processing Center (GPC), Qatar University, Doha, Qatar.
اللغةen
الناشرThe Royal Society of Chemistry
الموضوعOxygen Evolution Reaction
العنوانSolution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium
النوعArticle
الصفحات1694-1703
رقم العدد3
رقم المجلد12
ESSN2046-2069
dc.accessType Open Access


الملفات في هذه التسجيلة

Thumbnail

هذه التسجيلة تظهر في المجموعات التالية

عرض بسيط للتسجيلة