Fully Synthetic Approach toward Transition Metal-Nitrogen-Carbon Oxygen Reduction Electrocatalysts

Rohan Gokhale; Surendra Thapa; Kateryna Artyushkova; Ramesh Giri; Plamen Atanassov

doi:10.1021/acsaem.8b00537

Fully Synthetic Approach toward Transition Metal-Nitrogen-Carbon Oxygen Reduction Electrocatalysts

Rohan Gokhale, Surendra Thapa, Kateryna Artyushkova, Ramesh Giri, Plamen Atanassov

Chemistry

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

7 Scopus citations

Abstract

We report a nonpyrolytic chemical synthesis of model iron-nitrogen-carbon electrocatalysts for oxygen reduction reaction (ORR) to elucidate the role of Fe-N centers in the catalysis mechanism. The graphene-supported and unsupported catalysts were analyzed in detail by X-ray spectroscopy techniques. The electrochemical analysis was performed by linear sweep voltammetry and square wave voltammetry in 0.5 M H2SO4 and 0.1 M KOH electrolytes. In this article, with the use of model catalysts, we manifest and confirm the difference in the specific role of Fe-N active sites toward ORR in acidic and alkaline environments.

Original language	English (US)
Pages (from-to)	3802-3806
Number of pages	5
Journal	ACS Applied Energy Materials
Volume	1
Issue number	8
DOIs	https://doi.org/10.1021/acsaem.8b00537
State	Published - Aug 27 2018

All Science Journal Classification (ASJC) codes

Chemical Engineering (miscellaneous)
Energy Engineering and Power Technology
Electrochemistry
Electrical and Electronic Engineering
Materials Chemistry

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10.1021/acsaem.8b00537

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title = "Fully Synthetic Approach toward Transition Metal-Nitrogen-Carbon Oxygen Reduction Electrocatalysts",

abstract = "We report a nonpyrolytic chemical synthesis of model iron-nitrogen-carbon electrocatalysts for oxygen reduction reaction (ORR) to elucidate the role of Fe-N centers in the catalysis mechanism. The graphene-supported and unsupported catalysts were analyzed in detail by X-ray spectroscopy techniques. The electrochemical analysis was performed by linear sweep voltammetry and square wave voltammetry in 0.5 M H2SO4 and 0.1 M KOH electrolytes. In this article, with the use of model catalysts, we manifest and confirm the difference in the specific role of Fe-N active sites toward ORR in acidic and alkaline environments. ",

author = "Rohan Gokhale and Surendra Thapa and Kateryna Artyushkova and Ramesh Giri and Plamen Atanassov",

note = "Funding Information: We thank the Center for Micro-Engineered Materials (CMEM) at the University of New Mexico (UNM) for financial support. Publisher Copyright: Copyright {\textcopyright} 2018 American Chemical Society.",

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doi = "10.1021/acsaem.8b00537",

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AU - Gokhale, Rohan

AU - Thapa, Surendra

AU - Artyushkova, Kateryna

AU - Giri, Ramesh

AU - Atanassov, Plamen

N1 - Funding Information: We thank the Center for Micro-Engineered Materials (CMEM) at the University of New Mexico (UNM) for financial support. Publisher Copyright: Copyright © 2018 American Chemical Society.

PY - 2018/8/27

Y1 - 2018/8/27

N2 - We report a nonpyrolytic chemical synthesis of model iron-nitrogen-carbon electrocatalysts for oxygen reduction reaction (ORR) to elucidate the role of Fe-N centers in the catalysis mechanism. The graphene-supported and unsupported catalysts were analyzed in detail by X-ray spectroscopy techniques. The electrochemical analysis was performed by linear sweep voltammetry and square wave voltammetry in 0.5 M H2SO4 and 0.1 M KOH electrolytes. In this article, with the use of model catalysts, we manifest and confirm the difference in the specific role of Fe-N active sites toward ORR in acidic and alkaline environments.

AB - We report a nonpyrolytic chemical synthesis of model iron-nitrogen-carbon electrocatalysts for oxygen reduction reaction (ORR) to elucidate the role of Fe-N centers in the catalysis mechanism. The graphene-supported and unsupported catalysts were analyzed in detail by X-ray spectroscopy techniques. The electrochemical analysis was performed by linear sweep voltammetry and square wave voltammetry in 0.5 M H2SO4 and 0.1 M KOH electrolytes. In this article, with the use of model catalysts, we manifest and confirm the difference in the specific role of Fe-N active sites toward ORR in acidic and alkaline environments.

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Fully Synthetic Approach toward Transition Metal-Nitrogen-Carbon Oxygen Reduction Electrocatalysts

Abstract

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