Enhancing Electrocatalytic Performance of Bifunctional Cobalt–Manganese-Oxynitride Nanocatalysts on Graphene

Yang Li; Kurian A. Kuttiyiel; Lijun Wu; Yimei Zhu; Etsuko Fujita; Radoslav R. Adzic; Kotaro Sasaki

doi:10.1002/cssc.201601188

Enhancing Electrocatalytic Performance of Bifunctional Cobalt–Manganese-Oxynitride Nanocatalysts on Graphene

Yang Li, Kurian A. Kuttiyiel, Lijun Wu, Yimei Zhu, Etsuko Fujita, Radoslav R. Adzic, Kotaro Sasaki

Brookhaven National Laboratory

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

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
Pages (from-to)	68-73
Number of pages	6
Journal	ChemSusChem
Volume	10
Issue number	1
DOIs	https://doi.org/10.1002/cssc.201601188
Publication status	Published - 2017

Keywords

nitriding
oxygen evolution
oxygen reduction
oxynitride
spinel

ASJC Scopus subject areas

Environmental Chemistry
Chemical Engineering(all)
Materials Science(all)
Energy(all)

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title = "Enhancing Electrocatalytic Performance of Bifunctional Cobalt–Manganese-Oxynitride Nanocatalysts on Graphene",

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.",

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AU - Zhu, Yimei

AU - Fujita, Etsuko

AU - Adzic, Radoslav R.

AU - Sasaki, Kotaro

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