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 language | English |
|---|---|
| Pages (from-to) | 11068-11072 |
| Number of pages | 5 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 54 |
| Issue number | 38 |
| DOIs | |
| Publication status | Published - 2015 Sept 14 |
Keywords
- copper
- electrocatalysis
- fuel cells
- nanostructures
- oxygen reduction