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Related Experiment Video

Updated: Mar 15, 2026

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Highly Efficient Oxygen Reduction Electrocatalyst Derived from a New Three-Dimensional PolyPorphyrin.

Shi-Bin Ren1,2, Jiong Wang1, Xing-Hua Xia1

  • 1State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China.

ACS Applied Materials & Interfaces
|September 9, 2016
PubMed
Summary

New metal-encapsulated nitrogen-doped porous carbonaceous materials (NDPCs) show superior oxygen reduction electrocatalyst performance. These materials offer enhanced activity and durability compared to platinum, paving the way for advanced energy devices.

Keywords:
FeN4 active sitesMössbauer spectroscopymetalloporphyrinnitrogen-doping porous carbonaceous materialsoxygen reduction electrocatalyst

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Metal-encapsulated nitrogen-doped porous carbonaceous materials (NDPCs) derived from metalloporphyrin-based covalent organic frameworks (MP-COFs) are promising oxygen reduction reaction (ORR) electrocatalysts.
  • Enhancing the ORR performance and durability of NDPCs is crucial for next-generation energy conversion and storage systems.

Purpose of the Study:

  • To develop a novel metal-encapsulated NDPC (HBY-COF-900) with enhanced ORR activity and durability.
  • To investigate the structural and catalytic properties of FeN4 active sites within a porous COF framework.

Main Methods:

  • Synthesis of HBY-COF-900 by incorporating metalloporphyrin into porous covalent organic frameworks.
  • Electrochemical evaluation of HBY-COF-900 for oxygen reduction reaction (ORR) in acidic media.
  • Characterization of material properties, including graphitization and porous structure.

Main Results:

  • HBY-COF-900 demonstrates higher ORR electrocatalytic activity and long-term durability compared to the benchmark 20% Pt/C in acidic solutions.
  • The material exhibits excellent CO tolerance, a key advantage over platinum-based catalysts.
  • Synergistic effects from FeN4 active sites, high graphitization, and porous structure contribute to the superior performance.

Conclusions:

  • The developed HBY-COF-900 represents a highly effective ORR electrocatalyst with potential for advanced energy applications.
  • This study highlights the potential of metal-encapsulated NDPCs derived from three-dimensional polyporphyrin synthesized via one-step polymerization.