Ternary FeCoNi alloy nanoparticles embedded in N-doped carbon nanotubes for efficient oxygen evolution reaction electrocatalysis

Zhao Li, Liang Cai, Ming Song, Yanchao Shen, Xiang Wang, Jing Li, Ju Wang, Peng Wang, Lin Tian*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

The development of highly active and low-cost electrocatalysts toward oxygen evolution reaction (OER), especially the non-noble metal electrocatalysts with well-defined nanostructures, is of great significance for the practical application in metal–air batteries and overall water splitting. Herein, we report a simple pyrolysis method to construct the ternary FeCoNi alloy nanoparticles that encapsulated with bamboo-like N-doped carbon nanotubes (N-CNTs). By combining the advantages of FeCoNi alloy with N-CNTs, the as-fabricated FeCoNi@N-CNTs have large active surface area, ultrahigh content of graphitic carbon, and abundant active metal–C/Nx species to show better electrocatalytic performance for OER in alkaline media. The optimized Fe1Co1Ni1@N-CNTs displays perfect electrocatalytic performance toward OER with an unexpectedly small onset potential of 1.43 V and an ultralow overpotential of 249 mV at 10 mA cm−2, as well as remarkable long-time stability in alkaline media. More importantly, by coupling Fe1Co1Ni1@N-CNTs as the anode electrode, our previous reported Fe1Co3Mo3 P–O as cathode electrode, a potential of only 1.62 V is needed to drive the water electrolysis to reach to the current density of 10 mA cm−2, comparable to the state-of-the-art IrO2 ‖ Pt/C couple. This work provides new perspectives for constructing efficient and stable N-CNTs encapsulated non-precious metal electrocatalysts for OER.

Original languageEnglish (US)
Article number135886
JournalElectrochimica Acta
Volume339
DOIs
StatePublished - Apr 10 2020

Bibliographical note

Funding Information:
This work was supported by Jiangsu Provincial Key Research and Development Program ( BE2016648 ), Youth Science and Technology Talents Enrollment Project of the Jiangsu Association of Science and Technology. The Natural Science Foundation of the Jiangsu Higher Education Institutions of China ( 19KJA430020 ), We also thanked the Analysis and Testing center, school of Materials and Chemical Engineering of Xuzhou University of Technology.

Funding Information:
This work was supported by Jiangsu Provincial Key Research and Development Program (BE2016648), Youth Science and Technology Talents Enrollment Project of the Jiangsu Association of Science and Technology. The Natural Science Foundation of the Jiangsu Higher Education Institutions of China (19KJA430020), We also thanked the Analysis and Testing center, school of Materials and Chemical Engineering of Xuzhou University of Technology.

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

  • FeCoNi alloy
  • Graphitic carbon
  • Metal-C/N
  • N-CNTs
  • OER

ASJC Scopus subject areas

  • General Chemical Engineering
  • Electrochemistry

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