富勒烯晶格限域PtFeCoNiRu高熵合金催化剂的制备及其电解水析氢性能OA

Electrochemical water splitting is one of the primary methods for producing"green hydrogen,"but the slow kinetics of the cathodic hydrogen evolution reaction(HER)heavily rely on efficient catalysts.Although platinum(Pt)-based noble metal catalysts exhibit excel-lent performance,their high cost and scarcity limit large-scale application.Therefore,develo-ping HER catalysts with low noble metal loading and high activity is of great significance.In this study,a ruthenium(Ru)-based high-entropy alloy catalyst confined within a fullerene lattice,PtFeCoNi/Ru@CFN,was successfully prepared via multi-metal co-reduction and high-temperature sintering.In 1 M KOH alkaline electrolyte,the catalyst requires an overpo-tential of only 31 mV to achieve a current density of 10 mA cm-2.At an overpotential of 0.1 V,its mass activity is 16.9 times higher than that of commercial Pt/C,and it demonstrates excellent stability,maintaining continuous operation for over 40 hours.Structural character-ization and electrochemical tests indicate that the introduction of Ru further optimizes the e-lectronic structure,and the synergistic effect of the multi-metal alloy significantly enhances the intrinsic activity.This study provides a new strategy for designing low-cost,high-per-formance HER catalysts with strong potential for practical applications.