期刊
CHEMSUSCHEM
卷 10, 期 1, 页码 68-73出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201601188
关键词
nitriding; oxygen evolution; oxygen reduction; oxynitride; spinel
资金
- U.S. Department of Energy [DESC0012704]
- Synchrotron Catalysis Consortium, U.S. Department of Energy [DE-FG02-05ER15688]
We report the synthesis and characterization of graphene-supported 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.
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