Facile synthesis of FeNi alloy-supported N-doped Mo2C hollow nanospheres for the oxygen evolution reaction

Kai Huang; Lin Hao; Yirui Liu; Ming Su; Yongjun Gao; Yufan Zhang

doi:10.1016/j.jcis.2023.12.063

Facile synthesis of FeNi alloy-supported N-doped Mo₂C hollow nanospheres for the oxygen evolution reaction

J Colloid Interface Sci. 2024 Mar 15:658:267-275. doi: 10.1016/j.jcis.2023.12.063. Epub 2023 Dec 14.

Authors

Kai Huang¹, Lin Hao², Yirui Liu¹, Ming Su¹, Yongjun Gao¹, Yufan Zhang³

Affiliations

¹ State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Hebei University, 071002 Baoding, PR China.
² College of Science, Hebei Agricultural University, 071001 Baoding, PR China.
³ State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Hebei University, 071002 Baoding, PR China. Electronic address: zyf@hbu.edu.cn.

PMID: 38104409
DOI: 10.1016/j.jcis.2023.12.063

Abstract

The rapid depletion of fossil fuels results in significant environmental pollution. Consequently, researching environmentally friendly and cost-effective electrocatalysts with exceptional oxygen evolution reaction (OER) capabilities holds immense importance in enhancing the efficient utilization of resources. In this paper, a straightforward and cost-effective method was employed to produce Fe-Ni alloy-supported N-doped carbon hollow nanospheres (FeNi/Mo₂C/NC) using self-assembled molybdenum dopamine spheres (Mo-PDA-HS) as a substrate. The inclusion of iron and nickel addressed the issue of aggregation and collapse in Mo-PDA-HS nanostructures at high temperatures, while adjusting the electronic structure of the composites to achieve efficient OER activity. The composite displayed a low overpotential (η10 mA = 304 mV) and a minimal Tafel slope (41.8 mV/dec^-1). This study introduces a simple strategy for constructing structurally robust and non-aggregating Mo₂C nanostructures, along with a direct method for designing cost-effective and high-performance catalysts for OER.

Keywords: FeNi alloy; N-doped Mo(2)C hollow nanospheres; Oxygen evolution reaction.