Enhancing Electrocatalytic Performance of Bifunctional Cobalt-Manganese-Oxynitride Nanocatalysts on Graphene
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- 作者：Yang Li ; Dr. Kurian A. Kuttiyiel ; Dr. Lijun Wu ; Dr. Yimei Zhu ; Dr. Etsuko Fujita ; Dr. Radoslav R. Adzic and Dr. Kotaro Sasaki
- 刊名：ChemSusChem
- 出版年：2017
- 出版时间：January 10, 2017
- 年：2017
- 卷：10
- 期：1
- 页码：68-73
- 全文大小：1280K
- ISSN：1864-564X
文摘
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.