Moorthi Lokanathan*, Arunachalam Arulraj, Mangalaraja Ramalinga Viswanathan*, Francisco V Herrera Diaz, Federico Tasca, Sadasivan Shaji and Miguel A. Gracia-Pinilla,
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This study aims to enhance the sluggish kinetics of the oxygen reduction reaction at the cathode of polymer electrolyte membrane fuel cells ordered polyhedron (OP) Pt2FeCo ternary alloy electrocatalytic nanoparticles on a high surface area carbon support were prepared in a highly polarized ionic pool (molten) salt condition. The formation of mainly 8 nm OP nanoparticles with a face-centered tetragonal (fct) crystal structure was confirmed by transmission electron microscopy and the presence of superlattice peaks in the X-ray diffraction pattern, respectively. X-ray photoelectron spectroscopy revealed the existence of Pt, Fe, and Co on the surface of the nanoparticles. Furthermore, the electrochemical measurements indicated that the OP Pt2FeCo/C nanoparticles expressed 11- and 17-times higher mass and specific activity, respectively, than commercial Pt/C. Finally, the stability test showed that even after 30,000 potential cycles, 89% of the initial activity of the OP Pt2FeCo/C ternary alloy electrocatalyst was retained, confirming its highly stable nature.
期刊介绍：
Energy & Fuels publishes reports of research in the technical area defined by the intersection of the disciplines of chemistry and chemical engineering and the application domain of non-nuclear energy and fuels. This includes research directed at the formation of, exploration for, and production of fossil fuels and biomass; the properties and structure or molecular composition of both raw fuels and refined products; the chemistry involved in the processing and utilization of fuels; fuel cells and their applications; and the analytical and instrumental techniques used in investigations of the foregoing areas.
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