Oxygen-evolution reaction by nickel/nickel oxide interface in the presence of ferrate(VI)

doi:10.1038/s41598-020-65674-x

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	Oxygen-evolution reaction by nickel/nickel oxide interface in the presence of ferrate(VI)
	Akbari, Mohammad Saleh Ali ; Bagheri, Robabeh ; Song, Zhenlun ; Najafpour, Mohammad Mahdi
刊名	SCIENTIFIC REPORTS
	2020
卷号	10 期号:1
关键词	REVISED POURBAIX DIAGRAMS WATER-OXIDATION MOLECULAR CATALYSTS NICKEL IRON ELECTROCATALYSTS IMPURITIES
DOI	10.1038/s41598-020-65674-x
英文摘要	In this study, we investigate the effect of K2FeO4, as a new and soluble Fe salt at alkaline conditions, on oxygen-evolution reaction (OER) of Ni oxide. Both oxidation and reduction peaks for Ni in the presence and absence of Fe are linearly changed by (scan rate)(1/2). Immediately after the interaction of [FeO4](2-) with the surface of the electrode, a significant increase in OER is observed. This could be indicative of the fact that either the [FeO4](2-) on the surface of Ni oxide is directly involved in OER, or, it is important to activate Ni oxide toward OER. Due to the change in the Ni(II)/(III) peak, it is hypothesized that Fe impurity in KOH or electrochemical cell has different effects at the potential range. At low potential, [FeO4](2-) is reduced on the surface of the electrode, and thus, is significantly adsorbed on the electrode. Finally, oxygen-evolution measurements of K2FeO4 and Ni2O3 are investigated under chemical conditions. K2FeO4 is not stable in the presence of Ni(II) oxide, and OER is observed in a KOH solution (pH approximate to 13).
学科主题	Science & Technology - Other Topics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20779]
专题	2020专题
作者单位	1.Najafpour, MM (corresponding author), Inst Adv Studies Basic Sci IASBS, Dept Chem, Zanjan 4513766731, Iran. 2.Najafpour, MM (corresponding author), Inst Adv Studies Basic Sci IASBS, Ctr Climate Change & Global Warming, Zanjan 4513766731, Iran. 3.Najafpour, MM (corresponding author), Inst ForAdv Studies Basic Sci IASBS, Res Ctr Basic Sci & Modern Technol RBST, Zanjan 4513766731, Iran.
推荐引用方式 GB/T 7714	Akbari, Mohammad Saleh Ali,Bagheri, Robabeh,Song, Zhenlun,et al. Oxygen-evolution reaction by nickel/nickel oxide interface in the presence of ferrate(VI)[J]. SCIENTIFIC REPORTS,2020,10(1).
APA	Akbari, Mohammad Saleh Ali,Bagheri, Robabeh,Song, Zhenlun,&Najafpour, Mohammad Mahdi.(2020).Oxygen-evolution reaction by nickel/nickel oxide interface in the presence of ferrate(VI).SCIENTIFIC REPORTS,10(1).
MLA	Akbari, Mohammad Saleh Ali,et al."Oxygen-evolution reaction by nickel/nickel oxide interface in the presence of ferrate(VI)".SCIENTIFIC REPORTS 10.1(2020).