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2D Fe-doped NiO nanosheets with Grain Boundary Defect for Advanced Oxygen Evolution Reaction

Abstract

Two-dimensional (2D) nanomaterials with grain boundary defect are attractive to researchers in many fields, such as, energy conversions and storage, sensor, catalysis and biological medicine. In this work, a nanostructure of 2D Fe-doped NiO nanosheets (NiFexO) with grain boundary defect was designed and applied in electrocatalytic oxygen evolution reaction. This nanomaterial was synthesized through a solvothermal strategy and followed by a thermally driven conversion process. In general, NiFexO electrocatalysts were fabricated with gradual morphological variation of atomic ratio of Ni:Fe. It is surprised that the Fe content determine the electrocatalytic performance and the overpotential of water oxidation exhibits an inverted volcanic pattern. As expected, the as-prepared 2D NiFe0.1O nanosheets with grain boundary defect exhibit enhanced OER activity (274 mV @ 10 mA cm−2) compared with the oxide electrocatalyst reported in 1.0 M KOH owing to the advantages of abundant active sites. This work will shed a light for designing and fabricating novel-structured nanocatalysts.

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Supplementary files

Article information


Submitted
04 Dec 2019
Accepted
19 Jan 2020
First published
04 Mar 2020

Dalton Trans., 2020, Accepted Manuscript
Article type
Paper

2D Fe-doped NiO nanosheets with Grain Boundary Defect for Advanced Oxygen Evolution Reaction

Y. Dong, J. Yang, Y. Liu, Y. Wang, Z. Dong, M. Cui, M. Li, X. Yuan, X. Zhang and X. Dai, Dalton Trans., 2020, Accepted Manuscript , DOI: 10.1039/C9DT04633J

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