Anchoring Active Sites by Pt ₂ FeNi Alloy Nanoparticles on NiFe Layered Double Hydroxides for Efficient Electrocatalytic Oxygen Evolution Reaction

Strategy of anchoring alloy nanoparticles made up the efficient catalytic element (e.g., Ni, Fe) on dodecyl sulfate (DS-)-intercalated NiFe layered double hydroxides (DS--NiFe LDH) obtained by a convenient one-step hydrothermal coprecipitation method for essentially enhancing oxygen evolution reaction (OER) performance was proposed. The results structural characterization indicate Pt2FeNi evenly distribute surface DS--NiFe LDH. sizes nanoparticles, closely related to their OER performance, could be well-controlled adjusting amount H2PtCl6 addition. composite structure as-prepared product stable during processes synthesis, exfoliation, self-assembly, and subsequent electrocatalytic OER. Rigorous electrochemical test proving contributing active sites located at interface between LDH, Ni Fe were major elements while O atoms are adsorption sites. formation greatly prompt reduction Tafel slope. best-performing Pt2FeNi/DS--NiFe LDH with Pt content 0.98 wt% achieved low overpotential 204 mV 10 mA cm?2 262 50 cm?2. This work provides effective strategy create additional make contribution its wide application.