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Related Experiment Video

Updated: Jun 26, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
09:02

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

Pd@PtRuNi core-shell nanowires as oxygen reduction electrocatalysts.

Qian Liu1, Seng Dong2,3, Yuanzhe Wang4

  • 1Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao 066004, People's Republic of China.

Nanotechnology
|June 19, 2023
PubMed
Summary

New Pd@PtRuNi core-shell nanowires significantly boost fuel cell performance. These advanced catalysts offer superior activity and durability for the oxygen reduction reaction (ORR), surpassing current benchmarks.

Keywords:
core–shell nanowireshigh durabilityoxygen reduction catalysts

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Fuel cells offer efficient, low-pollution energy conversion, but require effective catalysts for the oxygen reduction reaction (ORR).
  • Cost-effective and high-performance ORR catalysts are crucial for widespread fuel cell adoption.

Purpose of the Study:

  • To develop advanced core-shell nanostructures for enhanced ORR catalysis.
  • To improve platinum atom utilization and catalytic efficiency in fuel cells.

Main Methods:

  • Synthesis of Pd@PtRuNi core-shell bilayer nanowires using palladium nanowires as templates.
  • Electrochemical characterization of the synthesized nanostructures for ORR activity and durability in alkaline media.
  • Evaluation against U.S. 2025 Department of Energy (DOE) targets.

Main Results:

  • Pd@PtRuNi nanowires exhibited a mass activity of 1.62 A/mgmetal at 0.9 V vs. RHE, significantly outperforming pristine Pd NWs and commercial Pt/C.
  • The nanostructures demonstrated excellent durability, with only 13.58% degradation after accelerated durability tests.
  • Performance exceeded U.S. 2025 DOE targets for ORR activity and durability.

Conclusions:

  • The Pd@PtRuNi core-shell bilayer nanowires represent a highly efficient and durable ORR catalyst.
  • Synergistic effects between Ni/Ru ligand effects and the 1D structure enhance electronic properties and stability.
  • This advancement is promising for the commercial development of fuel cells.