Insight into the Catalytic Activity of Amorphous Multimetallic Catalysts under a Magnetic Field toward the Oxygen Evolution Reaction

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Shuangshuang Jiang
  • Fugang Chen
  • Li Zhu
  • Zhanzhan Yang
  • Yu Lin
  • And 2 others
  • Quanhui Xu
  • Yingang Wang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)10227–10236
Journal / PublicationACS Applied Materials & Interfaces
Volume14
Issue number8
Online published16 Feb 2022
Publication statusPublished - 2 Mar 2022

Abstract

Slow kinetics in the oxygen evolution reaction (OER) remains a Gordian knot to develop an efficient and cost-effective electrocatalyst in electrochemical water splitting. In recent studies, either a synergistic effect on multimetallic catalysts or spin polarization in ferromagnetic materials is considered as a desirable way to improve water electrolysis. Herein, the OER performance of amorphous FeNiCo-based multimetallic catalysts with adjustable composition was investigated from the perspective of atomic structure. Mossbauer spectra results demonstrate that the OER activities exhibit a significant dependence on the local structure of catalysts in which a catalyst with a high content of Fe clusters of low coordination numbers tends to obtain higher activity. Furthermore, benefiting from the spin polarization of these ferromagnetic catalysts, the OER activity is notably enhanced in the presence of a magnetic field. In particular, overpotential reduction exceeding 20 mV (above 100 mA cm(-2)) in alkaline OER performance is observed for strong ferromagnetic catalysts in comparison with the weak ferromagnetic ones. An increment of 65.2% in turnover frequency is achieved for the catalyst with the strongest ferromagnetism. This magnetic enhancement strategy affords an effective way of improving the water oxidation performance on amorphous ferromagnetic catalysts.

Research Area(s)

  • multimetallic electrocatalyst, amorphous structure, oxygen evolution reaction, ferromagnetic material, magnetic field, GLASS-FORMING ABILITY, BULK METALLIC GLASSES, WATER OXIDATION, RECENT PROGRESS, MOSSBAUER-SPECTROSCOPY, ELECTROCATALYSTS, COBALT, OXIDES, ALLOY, IRON

Citation Format(s)

Insight into the Catalytic Activity of Amorphous Multimetallic Catalysts under a Magnetic Field toward the Oxygen Evolution Reaction. / Jiang, Shuangshuang; Chen, Fugang; Zhu, Li et al.

In: ACS Applied Materials & Interfaces, Vol. 14, No. 8, 02.03.2022, p. 10227–10236.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review