Abstract
We report the synthesis and characterization of graphenesupported cobalt–manganese-oxynitride nanocatalysts (CoMnON/G) as bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). A nitriding treatment of spinel compound CoMnO increased the ORR activity considerably, and the most active material catalyzed the ORR with only a 30 mV half-wave potential difference from the commercial carbon-supported platinum (Pt/C) in alkaline media. In addition to high activity, the catalyst also exhibited an intrinsic stability that outperformed Pt/C. An appropriately designed nitridation thus facilitates new directions for developing active and durable non-precious-metal oxynitride electocatalysts.
Original language | English |
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Pages (from-to) | 68-73 |
Number of pages | 6 |
Journal | ChemSusChem |
Volume | 10 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 10 2017 |
Keywords
- nitriding
- oxygen evolution
- oxygen reduction
- oxynitride
- spinel
ASJC Scopus subject areas
- Environmental Chemistry
- Chemical Engineering(all)
- Materials Science(all)
- Energy(all)