Ternary core-shell PdM@Pt (M = Mn and Fe) nanoparticle electrocatalysts with enhanced ORR catalytic properties

Highly Stable Pt‐Based Ternary Systems for Oxygen Reduction Reaction in Acidic Electrolytes

“…Also, Park et al reported compositiontunable ternary core-shell PdM@Pt (M = Mn and Fe) nanoparticles that endured 10 000 cycles of durability testing. [184] The enhanced stability of the Pd@PtIr core-shell nanocrystals compared to commercial Pt and their Pd@Pt counterparts reported by Zhu et al was attributed to Ir atoms incorporated in the Pt lattice, which destabilized OH-OH interactions and thus increased the oxidation potential of Pt. [185] Nevertheless, the role of Pd in improving the stability of Pt-based ternary core-shell nanostructures has not been studied in depth; further research is clearly warranted on this topic.…”

Sonochemical fabrication of inorganic nanoparticles for applications in catalysis

“…Osaka and coworkers have used the sonochemical synthesis to prepare a series of non-platinum nanoparticles including Pd, Au, Pd-Au and Pd-Co, [70] and as immobilized indium-tin oxide electrode, they showed widely different activities for oxygen reduction in alkaline solution. In Kwon’s report, the composition-tunable PdM@Pt/C (M = Mn and Fe) core–shell-like electrocatalysts were synthesized by a one-pot sonochemical approach, [71] and in comparison with Pt/C, the samples showed enhanced electrocatalytic activity and durability for oxygen reduction reaction ( Figure S1 ).…”

Ultrasound-Assisted Preparation Methods of Nanoparticles for Energy-Related Applications

“…A very useful overview on sonochemically prepared multicomponent electrocatalytic materials for low-temperature fuel cells is given by Lee and Kwon [75]. Most of the efforts are focusing on the partial replacement of Pt by low-cost metals, for example, Ni [76], or the Pt replacement by Pd and respective nanoalloys with low-cost metals (Mn and Fe as core-shell with Pd) as well [77]. Carbon-supported Sn NPs for electrochemical applications and especially for improving the kinetics of the ORR have been sonochemically synthesized and showed high reduction overpotential for the ORR mainly due to the high surface area of the resulting carbonsupported Sn electrode [78].…”