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*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)105-110
Number of pages6
JournalJournal of Catalysis
Volume369
DOIs
Publication statusPublished - Jan 2019
Externally publishedYes

Keywords

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

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Hu, C., Zhang, L., Huang, Z., Zhu, W., Zhao, Z. J., & Gong, J. (2019). Facet-evolution growth of Mn3O4@CoxMn3-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