Cargando…
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...
Autores principales: | , , , , , , , , |
---|---|
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 |
_version_ | 1783436670894342144 |
---|---|
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. |
format | Online Article Text |
id | pubmed-6640960 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT chisakamitsuharu zirconiumoxynitridecatalyzedoxygenreductionreactionatpolymerelectrolytefuelcellcathodes AT ishiharaakimitsu zirconiumoxynitridecatalyzedoxygenreductionreactionatpolymerelectrolytefuelcellcathodes AT moriokahiroyuki zirconiumoxynitridecatalyzedoxygenreductionreactionatpolymerelectrolytefuelcellcathodes AT nagaitakaaki zirconiumoxynitridecatalyzedoxygenreductionreactionatpolymerelectrolytefuelcellcathodes AT yinshihong zirconiumoxynitridecatalyzedoxygenreductionreactionatpolymerelectrolytefuelcellcathodes AT ohgiyoshiro zirconiumoxynitridecatalyzedoxygenreductionreactionatpolymerelectrolytefuelcellcathodes AT matsuzawakoichi zirconiumoxynitridecatalyzedoxygenreductionreactionatpolymerelectrolytefuelcellcathodes AT mitsushimashigenori zirconiumoxynitridecatalyzedoxygenreductionreactionatpolymerelectrolytefuelcellcathodes AT otakenichiro zirconiumoxynitridecatalyzedoxygenreductionreactionatpolymerelectrolytefuelcellcathodes |