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Related Experiment Video

Updated: Jul 29, 2025

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
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Engineering carbon semi-tubes supported platinum catalyst for efficient oxygen reduction electrocatalysis.

Jialin Cai1, Junxiang Chen2, Yizhe Chen1

  • 1Institute for Sustainable Energy/College of Sciences, Shanghai University, Shanghai 200444, China.

Iscience
|May 22, 2023
PubMed
Summary

A novel semi-tubular platinum/nitrogen-doped carbon catalyst (Pt/N-CST) enhances oxygen reduction reaction (ORR) performance and stability. This innovative structure, featuring interfacial Pt-N bonds, outperforms commercial catalysts.

Keywords:
CatalysisComputational chemistryElectrochemical energy conversionElectrochemical materials scienceMaterials chemistry

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • High-performance electrocatalysts are crucial for oxygen reduction reaction (ORR).
  • Catalyst structure innovation is key to improving electrocatalyst efficiency and stability.

Purpose of the Study:

  • To synthesize and characterize a novel semi-tubular platinum/nitrogen-doped carbon (Pt/N-CST) catalyst.
  • To investigate the structural and electronic properties of the Pt/N-CST catalyst and its ORR performance.
  • To explore the mechanism of enhanced ORR activity and stability.

Main Methods:

  • Synthesis of microwave-reduced Pt nanoparticles stabilized on nitrogen-doped carbon semi-tubes (N-CST).
  • Characterization using electron paramagnetic resonance (EPR) and X-ray absorption fine structure (XAFS) spectroscopy.
  • Electrochemical testing for ORR activity and stability.
  • Density functional theoretical (DFT) calculations.

Main Results:

  • The Pt/N-CST catalyst demonstrated superior ORR activity and electrochemical stability compared to commercial Pt/C.
  • Interfacial Pt-N bonds were identified, facilitating electron transfer from N-CST to Pt nanoparticles.
  • DFT calculations revealed enhanced ORR pathways at the interfacial Pt-N-C sites.

Conclusions:

  • The Pt/N-CST catalyst represents an innovative approach to designing high-performance electrocatalysts.
  • The interfacial Pt-N coordination is vital for enhancing both ORR catalysis and electrochemical stability.
  • The findings offer new insights into designing advanced catalysts for energy conversion applications.