Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction

A novel and facile two-step strategy has been designed to prepare high performance bi-transition-metals (Fe- and Mo-) carbide supported on nitrogen-doped graphene (FeMo-NG) as electrocatalysts for oxygen reduction reactions (ORR). The as-synthesized FeMo carbide -NG catalysts exhibit excellent elect...

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Autores principales: Chen, Minghua, Liu, Jilei, Zhou, Weijiang, Lin, Jianyi, Shen, Zexiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4441168/
https://www.ncbi.nlm.nih.gov/pubmed/25997590
http://dx.doi.org/10.1038/srep10389
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author Chen, Minghua
Liu, Jilei
Zhou, Weijiang
Lin, Jianyi
Shen, Zexiang
author_facet Chen, Minghua
Liu, Jilei
Zhou, Weijiang
Lin, Jianyi
Shen, Zexiang
author_sort Chen, Minghua
collection PubMed
description A novel and facile two-step strategy has been designed to prepare high performance bi-transition-metals (Fe- and Mo-) carbide supported on nitrogen-doped graphene (FeMo-NG) as electrocatalysts for oxygen reduction reactions (ORR). The as-synthesized FeMo carbide -NG catalysts exhibit excellent electrocatalytic activities for ORR in alkaline solution, with high onset potential (−0.09 V vs. saturated KCl Ag/AgCl), nearly four electron transfer number (nearly 4) and high kinetic-limiting current density (up to 3.5 mA cm(−2) at −0.8 V vs. Ag/AgCl). Furthermore, FeMo carbide -NG composites show good cycle stability and much better toxicity tolerance durability than the commercial Pt/C catalyst, paving their application in high-performance fuel cell and lithium-air batteries.
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spelling pubmed-44411682015-05-29 Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction Chen, Minghua Liu, Jilei Zhou, Weijiang Lin, Jianyi Shen, Zexiang Sci Rep Article A novel and facile two-step strategy has been designed to prepare high performance bi-transition-metals (Fe- and Mo-) carbide supported on nitrogen-doped graphene (FeMo-NG) as electrocatalysts for oxygen reduction reactions (ORR). The as-synthesized FeMo carbide -NG catalysts exhibit excellent electrocatalytic activities for ORR in alkaline solution, with high onset potential (−0.09 V vs. saturated KCl Ag/AgCl), nearly four electron transfer number (nearly 4) and high kinetic-limiting current density (up to 3.5 mA cm(−2) at −0.8 V vs. Ag/AgCl). Furthermore, FeMo carbide -NG composites show good cycle stability and much better toxicity tolerance durability than the commercial Pt/C catalyst, paving their application in high-performance fuel cell and lithium-air batteries. Nature Publishing Group 2015-05-22 /pmc/articles/PMC4441168/ /pubmed/25997590 http://dx.doi.org/10.1038/srep10389 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Chen, Minghua
Liu, Jilei
Zhou, Weijiang
Lin, Jianyi
Shen, Zexiang
Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction
title Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction
title_full Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction
title_fullStr Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction
title_full_unstemmed Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction
title_short Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction
title_sort nitrogen-doped graphene-supported transition-metals carbide electrocatalysts for oxygen reduction reaction
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4441168/
https://www.ncbi.nlm.nih.gov/pubmed/25997590
http://dx.doi.org/10.1038/srep10389
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AT zhouweijiang nitrogendopedgraphenesupportedtransitionmetalscarbideelectrocatalystsforoxygenreductionreaction
AT linjianyi nitrogendopedgraphenesupportedtransitionmetalscarbideelectrocatalystsforoxygenreductionreaction
AT shenzexiang nitrogendopedgraphenesupportedtransitionmetalscarbideelectrocatalystsforoxygenreductionreaction

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