One-pot production of a sea urchin-like alloy electrocatalyst for the oxygen electro-reduction reaction
Hau Quoc Pham, Tai Thien Huynh
Abstract
) and a direct four-electron ORR pathway with enhanced reaction kinetics. Additionally, the as-made NiPt NUCs/C electrocatalyst also shows impressive ORR catalytic stability compared to a commercial Pt NPs/C catalyst after an accelerated durability test with 15.29% degradation in mass activity, which is 3.04-times lower than 46.48% of the Pt NPs/C catalyst. The great ORR performance of the as-made catalyst is due to its unique urchin-like morphology with the dominant (111) facets and the synergistic and electronic effects of alloying Ni and Pt. This study not only provides a robust ORR electrocatalyst, but also opens a facile but effective route for fabricating 3D Pt-based binary and ternary alloy catalysts.
Topics & Concepts
ElectrocatalystCatalysisBimetallic stripTernary operationOxygen reduction reactionAlloyChemical engineeringMaterials scienceDegradation (telecommunications)NanotechnologyChemistryElectrodeMetallurgyElectrochemistryComputer scienceOrganic chemistryPhysical chemistryTelecommunicationsEngineeringProgramming languageElectrocatalysts for Energy ConversionAdvanced battery technologies researchFuel Cells and Related Materials