Metal-Free Triazine-Based Porous Organic Polymer-Derived N-Doped Porous Carbons as Effective Electrocatalysts for Oxygen Reduction Reaction

Biswajit Nayak, Ayan Mukherjee, Suddhasatwa Basu, Piyali Bhanja, Bikash Kumar Jena

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

In recent years, porous heteroatom-doped carbon materials have been very promising for energy conversion. A newly designed porous organic polymer (POPQ) has been synthesized using two organic monomers, i.e., 2,6-diaminoanthraquinone and cyanuric chloride, under reflux conditions for 72 h in an inert atmosphere. The triazine-containing porous organic polymers undergo pyrolysis, which produces two nitrogen-doped porous carbon materials, N/POPQ600 and N/POPQ800, at 600 and 800 °C temperatures, respectively. Since the resultant N-doped porous materials have a higher surface area than the parent porous organic polymer and the materials have a synergistic effect due to the enriched nitrogen content throughout the matrix, the metal-free N/POPQ600 and N/POPQ800 materials exhibit good electrocatalytic activity toward oxygen reduction reaction (ORR). Among these, the N/POPQ800 material shows excellent ORR activity with a nearly four-electron oxygen reduction pathway where the half-wave potential is estimated to be 0.728 V vs reversible hydrogen electrode (RHE), comparable with the commercially available Pt/C catalyst. Most interestingly, the N/POPQ800 catalyst displays outstanding long-lasting stability. It shows a better methanol tolerance capability than Pt/C, which can be attributed to the high specific surface area and N-doped well-defined crystalline porous structure. Also, the homogeneously distributed active sites throughout the carbon framework are the most precious for the electrochemical oxygen reduction reaction.

Original languageEnglish
Pages (from-to)15899-15908
Number of pages10
JournalACS Applied Energy Materials
Volume5
Issue number12
DOIs
StatePublished - 26 Dec 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2022 Authors. All rights reserved.

Keywords

  • N-doped porous carbon
  • ORR
  • electrocatalysis
  • porous organic polymer
  • pyrolysis

Fingerprint

Dive into the research topics of 'Metal-Free Triazine-Based Porous Organic Polymer-Derived N-Doped Porous Carbons as Effective Electrocatalysts for Oxygen Reduction Reaction'. Together they form a unique fingerprint.

Cite this