Poorly crystallized nickel hydroxide carbonate loading with Fe3+ ions as improved electrocatalysts for oxygen evolution

doi:10.1016/j.inoche.2020.107851

Inorganic Chemistry Communications

Volume 114, April 2020, 107851

https://doi.org/10.1016/j.inoche.2020.107851 Get rights and content

Highlights

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A simple immersing route was shown for the preparation of Ni₂(OH)₂(CO₃)-Fe³⁺ product.
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The Ni₂(OH)₂(CO₃)-Fe³⁺ product shows synergistic effect when used as electrocatalysts.
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The catalyst can drive current density of 10 mA cm⁻² at overpotential of 277 mV.
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The Fe³⁺ loaded catalyst also shows excellent stability for at least 36 h.

Abstract

Oxygen evolution reaction is a critical process involved in various energy-related devices. In this study, nickel hydroxide carbonate nanosheets obtained through a urea assisted route were loaded with iron species by immersing nickel hydroxide carbonate in aqueous Fe³⁺ solution. The different K_sp values of nickel hydroxide and iron hydroxide induce the formation of Fe species on nickel hydroxide carbonate nanosheet surface with the releasing of Ni²⁺ ions. Owing to the loading of island-like Fe species on nickel based nanosheets, the thus designed and prepared composites show amounts of exposed heterointerfaces with strong interactions between the species, and so present excellent electrocatalytic activity for oxygen evolution. At a lower overpotential of 277 mV, the optimized catalyst can drive a current density of 10 mA cm⁻² with higher stability. This study provides a new avenue for the development of OER electrocatalysts; that is, direct immersing with ion adsorption is effective.

Graphical abstract

Section snippets

CRediT authorship contribution statement

Wenjuan Zhu: Conceptualization, Methodology, Software, Investigation, Validation, Writing - original draft. Guoxing Zhu: Conceptualization, Supervision, Project administration, Writing - review & editing. Jing Hu: Investigation, Visualization, Writing - review & editing. Yi Zhu: Formal analysis, Software, Data curation, Writing - review & editing. Hu Chen: Resources, Data curation, Writing - review & editing. Chengli Yao: Formal analysis, Data curation, Writing - review & editing. Zongxin Pi:

Declaration of Competing Interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Acknowledgements

Thanks for National Natural Science Foundation of China (No. 21776115), the Foundation of the Educational Committee of Anhui Province (Nos. KJ2016A587, KJ2016A572, KJ2016A579), Major Special Science and Technology Project of Anhui Province (201903a07020003), Program of Study Domestic for Young Scholar sponsored by Department of Education Anhui Province (gxgnfx2018024) and Pharmaceutical Engineering Undergraduate Education Project (Sino-foreign cooperative training project, 2018zwpy024).

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Poorly crystallized nickel hydroxide carbonate loading with Fe3+ ions as improved electrocatalysts for oxygen evolution

Highlights

Abstract

Graphical abstract

Section snippets

CRediT authorship contribution statement

Declaration of Competing Interest

Acknowledgements

Nano Energy

Inorg. Chem. Commun.

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J. Alloys Compd.

Progr. Nat. Sci.: Mater. Int.

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Electrochim. Acta

Int. J. Hydrogen Energy

Int. J. Hydrogen Energy

Colloids Surf. A

J. Alloys Compd.

Electrochim. Acta

J. Power Sources

Powder Technol.

Nano Energy

Inorg. Chem. Commun.

J. Energy Chem.

Appl. Surf. Sci.

A highly active and stable IrOx/SrIrO3 catalyst for the oxygen evolution reaction

Science

Nickel oxides relation between electrochemcial reactivity and foreign ion content

Ind. Eng. Chem.

Identification of highly active Fe sites in (Ni, Fe)OOH for electrocatalytic water splitting

J. Am. Chem. Soc.

Poorly crystallized nickel hydroxide carbonate loading with Fe³⁺ ions as improved electrocatalysts for oxygen evolution

A highly active and stable IrO_x/SrIrO₃ catalyst for the oxygen evolution reaction