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• W4382063092 abstract "In the present paper, we reported the synthesis of some Ni-substituted spinel ferrites by low temperature sol-gel method and studied their physicochemical and electrocatalytic properties towards oxygen evolution reaction (OER) in alkaline medium. Nitrate salt of Ni and Fe and freshly extracted egg-white (Ovalbumin) were used as starting materials. X-ray diffraction (XRD) study of the material showed the formation of almost pure spinel phase having some small impurity. For electrochemical studies, materials, so obtained, were transferred in the form of oxide film electrode on Ni-support by oxide slurry painting technique. The voltammogram of each oxide electrode exhibited a pair of redox peaks (E ° = 446 ± 12 mV) prior to the OER. The anodic polarization study showed that Ni-substitution in the base oxide increased the electrocatalytic activity considerably and the value was found to be maximum with 0.5 mol Ni (j = 100 mA cm-2 at E = 865 mV vs Hg/HgO/ 1M KOH) substitution. Tafel slope values were ranged between 65-102 mV decade-1. Each oxide electrode showed almost first order kinetics with respect to [OH-] concentration. The polarization curve has also been recorded at different temperatures in 1 M KOH and with the help of the data obtained at different temperatures, activation energy and other thermodynamic parameters were estimated." @default.
• W4382063092 created "2023-06-27" @default.
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• W4382063092 date "2015-11-01" @default.
• W4382063092 modified "2023-10-17" @default.
• W4382063092 title "Electrocatalytic Activity of NixFeO4 (0 < x < 1.5) Obtained by Natural Egg Ovalbumin for Alkaline Water Electrolysis" @default.
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• W4382063092 doi "https://doi.org/10.1016/s1452-3981(23)11178-3" @default.
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