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Zirconium Oxynitride-Catalyzed Oxygen Reduction Reaction at Polymer Electrolyte Fuel Cell Cathodes

[Image: see text] Most nonplatinum group metal (non-PGM) catalysts for polymer electrolyte fuel cell cathodes have so far been limited to iron(cobalt)/nitrogen/carbon [Fe(Co)/N/C] composites owing to their high activity in both half-cell and single-cell cathode processes. Group IV and V metal oxides...

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Autores principales: Chisaka, Mitsuharu, Ishihara, Akimitsu, Morioka, Hiroyuki, Nagai, Takaaki, Yin, Shihong, Ohgi, Yoshiro, Matsuzawa, Koichi, Mitsushima, Shigenori, Ota, Ken-ichiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2017
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6640960/
https://www.ncbi.nlm.nih.gov/pubmed/31457464
http://dx.doi.org/10.1021/acsomega.6b00555
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author Chisaka, Mitsuharu
Ishihara, Akimitsu
Morioka, Hiroyuki
Nagai, Takaaki
Yin, Shihong
Ohgi, Yoshiro
Matsuzawa, Koichi
Mitsushima, Shigenori
Ota, Ken-ichiro
author_facet Chisaka, Mitsuharu
Ishihara, Akimitsu
Morioka, Hiroyuki
Nagai, Takaaki
Yin, Shihong
Ohgi, Yoshiro
Matsuzawa, Koichi
Mitsushima, Shigenori
Ota, Ken-ichiro
author_sort Chisaka, Mitsuharu
collection PubMed
description [Image: see text] Most nonplatinum group metal (non-PGM) catalysts for polymer electrolyte fuel cell cathodes have so far been limited to iron(cobalt)/nitrogen/carbon [Fe(Co)/N/C] composites owing to their high activity in both half-cell and single-cell cathode processes. Group IV and V metal oxides, another class of non-PGM catalysts, are stable in acidic media; however, their activities have been mostly evaluated for half-cells, with no single-cell performances comparable to those of Fe/N/C composites reported to date. Herein, we report successful syntheses of zirconium oxynitride catalysts on multiwalled carbon nanotubes, which show the highest oxygen reduction reaction activity among oxide-based catalysts. The single-cell performance of these catalysts reached 10 mA cm(–2) at 0.9 V, being comparable to that of state-of-the-art Fe/N/C catalysts. This new record opens up a new pathway for reaching the year 2020 target set by the U.S. Department of Energy, that is, 44 mA cm(–2) at 0.9 V.
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spelling pubmed-66409602019-08-27 Zirconium Oxynitride-Catalyzed Oxygen Reduction Reaction at Polymer Electrolyte Fuel Cell Cathodes Chisaka, Mitsuharu Ishihara, Akimitsu Morioka, Hiroyuki Nagai, Takaaki Yin, Shihong Ohgi, Yoshiro Matsuzawa, Koichi Mitsushima, Shigenori Ota, Ken-ichiro ACS Omega [Image: see text] Most nonplatinum group metal (non-PGM) catalysts for polymer electrolyte fuel cell cathodes have so far been limited to iron(cobalt)/nitrogen/carbon [Fe(Co)/N/C] composites owing to their high activity in both half-cell and single-cell cathode processes. Group IV and V metal oxides, another class of non-PGM catalysts, are stable in acidic media; however, their activities have been mostly evaluated for half-cells, with no single-cell performances comparable to those of Fe/N/C composites reported to date. Herein, we report successful syntheses of zirconium oxynitride catalysts on multiwalled carbon nanotubes, which show the highest oxygen reduction reaction activity among oxide-based catalysts. The single-cell performance of these catalysts reached 10 mA cm(–2) at 0.9 V, being comparable to that of state-of-the-art Fe/N/C catalysts. This new record opens up a new pathway for reaching the year 2020 target set by the U.S. Department of Energy, that is, 44 mA cm(–2) at 0.9 V. American Chemical Society 2017-02-23 /pmc/articles/PMC6640960/ /pubmed/31457464 http://dx.doi.org/10.1021/acsomega.6b00555 Text en Copyright © 2017 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Chisaka, Mitsuharu
Ishihara, Akimitsu
Morioka, Hiroyuki
Nagai, Takaaki
Yin, Shihong
Ohgi, Yoshiro
Matsuzawa, Koichi
Mitsushima, Shigenori
Ota, Ken-ichiro
Zirconium Oxynitride-Catalyzed Oxygen Reduction Reaction at Polymer Electrolyte Fuel Cell Cathodes
title Zirconium Oxynitride-Catalyzed Oxygen Reduction Reaction at Polymer Electrolyte Fuel Cell Cathodes
title_full Zirconium Oxynitride-Catalyzed Oxygen Reduction Reaction at Polymer Electrolyte Fuel Cell Cathodes
title_fullStr Zirconium Oxynitride-Catalyzed Oxygen Reduction Reaction at Polymer Electrolyte Fuel Cell Cathodes
title_full_unstemmed Zirconium Oxynitride-Catalyzed Oxygen Reduction Reaction at Polymer Electrolyte Fuel Cell Cathodes
title_short Zirconium Oxynitride-Catalyzed Oxygen Reduction Reaction at Polymer Electrolyte Fuel Cell Cathodes
title_sort zirconium oxynitride-catalyzed oxygen reduction reaction at polymer electrolyte fuel cell cathodes
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6640960/
https://www.ncbi.nlm.nih.gov/pubmed/31457464
http://dx.doi.org/10.1021/acsomega.6b00555
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