Facet-evolution growth of Mn3O4@CoxMn3-xO4 electrocatalysts on Ni foam towards efficient oxygen evolution reaction

Congling Hu; Lei Zhang; Zhiqi Huang; Wenjin Zhu; Zhi Jian Zhao; Jinlong Gong

doi:10.1016/j.jcat.2018.10.034

Facet-evolution growth of Mn₃O₄@Co_xMn_3-xO₄ electrocatalysts on Ni foam towards efficient oxygen evolution reaction

Congling Hu, Lei Zhang, Zhiqi Huang, Wenjin Zhu, Zhi Jian Zhao, Jinlong Gong^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

Developing efficient and stable non-noble electrocatalysts for oxygen evolution reaction (OER) is one of the promising and challenging issues. This paper describes an approach to prepare core-shell cobalt-manganese oxides with specific morphologies and oxygen vacancies. Via a facile seed growth method, facets evolution is achieved during the formation of core-shell structure. Benefited from optimized surface environment, oxygen vacancy-enriched octahedral cobalt-manganese oxides supported on Ni foam exhibited relatively low overpotential of 284 mV at the current density of 10 mA cm⁻² and diminutive tafel slope of 73.1 mV dec⁻¹ as well as long-term stability. This work successfully unveils a method for facet-modulation of core-shell metal oxides as efficient electrochemical OER catalysts.

Original language	English
Pages (from-to)	105-110
Number of pages	6
Journal	Journal of Catalysis
Volume	369
DOIs	https://doi.org/10.1016/j.jcat.2018.10.034
Publication status	Published - Jan 2019
Externally published	Yes

Keywords

Cobalt-manganese oxides
Core-shell structure
Facet-evolution growth
Oxygen evolution reaction
Oxygen vacancy

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10.1016/j.jcat.2018.10.034

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Hu, C., Zhang, L., Huang, Z., Zhu, W., Zhao, Z. J., & Gong, J. (2019). Facet-evolution growth of Mn₃O₄@Co_xMn_3-xO₄ electrocatalysts on Ni foam towards efficient oxygen evolution reaction. Journal of Catalysis, 369, 105-110. https://doi.org/10.1016/j.jcat.2018.10.034

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title = "Facet-evolution growth of Mn3O4@CoxMn3-xO4 electrocatalysts on Ni foam towards efficient oxygen evolution reaction",

abstract = "Developing efficient and stable non-noble electrocatalysts for oxygen evolution reaction (OER) is one of the promising and challenging issues. This paper describes an approach to prepare core-shell cobalt-manganese oxides with specific morphologies and oxygen vacancies. Via a facile seed growth method, facets evolution is achieved during the formation of core-shell structure. Benefited from optimized surface environment, oxygen vacancy-enriched octahedral cobalt-manganese oxides supported on Ni foam exhibited relatively low overpotential of 284 mV at the current density of 10 mA cm−2 and diminutive tafel slope of 73.1 mV dec−1 as well as long-term stability. This work successfully unveils a method for facet-modulation of core-shell metal oxides as efficient electrochemical OER catalysts.",

keywords = "Cobalt-manganese oxides, Core-shell structure, Facet-evolution growth, Oxygen evolution reaction, Oxygen vacancy",

author = "Congling Hu and Lei Zhang and Zhiqi Huang and Wenjin Zhu and Zhao, {Zhi Jian} and Jinlong Gong",

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doi = "10.1016/j.jcat.2018.10.034",

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AU - Hu, Congling

AU - Zhang, Lei

AU - Huang, Zhiqi

AU - Zhu, Wenjin

AU - Zhao, Zhi Jian

AU - Gong, Jinlong

PY - 2019/1

Y1 - 2019/1

N2 - Developing efficient and stable non-noble electrocatalysts for oxygen evolution reaction (OER) is one of the promising and challenging issues. This paper describes an approach to prepare core-shell cobalt-manganese oxides with specific morphologies and oxygen vacancies. Via a facile seed growth method, facets evolution is achieved during the formation of core-shell structure. Benefited from optimized surface environment, oxygen vacancy-enriched octahedral cobalt-manganese oxides supported on Ni foam exhibited relatively low overpotential of 284 mV at the current density of 10 mA cm−2 and diminutive tafel slope of 73.1 mV dec−1 as well as long-term stability. This work successfully unveils a method for facet-modulation of core-shell metal oxides as efficient electrochemical OER catalysts.

AB - Developing efficient and stable non-noble electrocatalysts for oxygen evolution reaction (OER) is one of the promising and challenging issues. This paper describes an approach to prepare core-shell cobalt-manganese oxides with specific morphologies and oxygen vacancies. Via a facile seed growth method, facets evolution is achieved during the formation of core-shell structure. Benefited from optimized surface environment, oxygen vacancy-enriched octahedral cobalt-manganese oxides supported on Ni foam exhibited relatively low overpotential of 284 mV at the current density of 10 mA cm−2 and diminutive tafel slope of 73.1 mV dec−1 as well as long-term stability. This work successfully unveils a method for facet-modulation of core-shell metal oxides as efficient electrochemical OER catalysts.

KW - Cobalt-manganese oxides

KW - Core-shell structure

KW - Facet-evolution growth

KW - Oxygen evolution reaction

KW - Oxygen vacancy

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ER -

Facet-evolution growth of Mn₃O₄@Co_xMn_3-xO₄ electrocatalysts on Ni foam towards efficient oxygen evolution reaction

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Keywords

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