Copper-Modified Covalent Triazine Frameworks as Non-Noble-Metal Electrocatalysts for Oxygen Reduction

Kazuyuki Iwase, Tatsuro Yoshioka, Shuji Nakanishi, Kazuhito Hashimoto, Kazuhide Kamiya

Research output: Contribution to journalArticlepeer-review

130 Citations (Scopus)

Abstract

The electrochemical oxygen reduction reaction (ORR) is an important cathode reaction of various types of fuel cells. The development of electrocatalysts composed only of abundant elements is a key goal because currently only platinum is a suitable catalyst for ORR. Herein, we synthesized copper-modified covalent triazine frameworks (CTF) hybridized with carbon nanoparticles (Cu-CTF/CPs) as efficient electrocatalysts for the ORR in neutral solutions. The ORR onset potential of the synthesized Cu-CTF/CP was 810 mV versus the reversible hydrogen electrode (RHE; pH 7), the highest reported value at neutral pH for synthetic Cu-based electrocatalysts. Cu-CTF/CP also displayed higher stability than a Cu-based molecular complex at neutral pH during the ORR, a property that was likely as a result of the covalently cross-linked structure of CTF. This work may provide a new platform for the synthesis of durable non-noble-metal electrocatalysts for various target reactions.

Original languageEnglish
Pages (from-to)11068-11072
Number of pages5
JournalAngewandte Chemie - International Edition
Volume54
Issue number38
DOIs
Publication statusPublished - 2015 Sep 14
Externally publishedYes

Keywords

  • copper
  • electrocatalysis
  • fuel cells
  • nanostructures
  • oxygen reduction

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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