关键字：NFCMS-HEA 电催化剂；晶格畸变；Sn 掺杂；碱性析氢；电化学沉积

摘要：High-entropy alloy electrocatalysts can better regulate the electronic structure and provide opportunities for catalytic reactions to a greater extent due to the synergistic effect between its multi-metal components. In this paper, Ni-Fe-Co-Mn-Sn high-entropy alloy (NFCMS-HEA) electrocatalysts were successfully prepared by one-step electrodeposition method on nickel foam substrate. The introduction of Sn atoms, which have significantly different atomic sizes compared to other elements, results in an increased degree of lattice distortion in the HEA and a highly open multi-level nanostructured surface, thereby endowing the catalyst with exceptionally high hydrogen evolution performance. The optimized NFCMS-HEA electrocatalyst exhibits a low overpotential of 4.3 mV at a current density of 10 mA cm- 2 and a low Tafel slope of 59.7 mV dec- 1 in 1 M KOH solution. In addition, it maintains a superior stability of electrolysis for more than 100 h in 1 M KOH solution. In conclusion, the present study offers prospects for the preparation of HER high-entropy catalysts by one-step electrodeposition.

卷号：41

期号：-

是否译文：否