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Updated: Feb 27, 2026

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PtPb/PtNi Intermetallic Core/Atomic Layer Shell Octahedra for Efficient Oxygen Reduction Electrocatalysis.

Lingzheng Bu1, Qi Shao1, Bin E1

  • 1College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Jiangsu 215123, China.

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|June 29, 2017
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Researchers developed novel platinum-lead-nickel octahedra catalysts for enhanced oxygen reduction reactions in fuel cells. These intermetallic nanomaterials show significantly improved activity and durability compared to commercial platinum catalysts.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • High-performance platinum-based nanomaterials are crucial for fuel cell reactions.
  • Controlling catalyst surface composition, exposed facets, and interior structure remains challenging.

Purpose of the Study:

  • To develop a facile chemical approach for synthesizing novel intermetallic Pt-Pb-Ni octahedra.
  • To investigate the electrocatalytic activity and stability of these new nanostructures for oxygen reduction reactions.

Main Methods:

  • Facile chemical synthesis of intermetallic Pt-Pb-Ni octahedra.
  • Electrocatalytic performance testing for oxygen reduction reaction (ORR).
  • Durability assessment through cyclic voltammetry.

Main Results:

  • Successfully synthesized a new class of intermetallic Pt-Pb-Ni octahedra.
  • Optimized PtPb1.12Ni0.14 octahedra demonstrated significantly enhanced ORR specific and mass activities (approx. 20x and 11x higher than Pt/C).
  • The catalysts exhibited excellent stability, enduring over 15,000 cycles with minimal activity loss.

Conclusions:

  • The developed intermetallic Pt-Pb-Ni octahedra represent a promising new class of Pt-based electrocatalysts.
  • These catalysts offer enhanced performance for fuel cells and other electrochemical applications.
  • The facile synthesis approach provides a pathway for designing advanced nanomaterials.