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CeO(2) nanocubes-graphene oxide as durable and highly active catalyst support for proton exchange membrane fuel cell

Rapid degradation of cell performance still remains a significant challenge for proton exchange membrane fuel cell (PEMFC). In this work, we develop novel CeO(2) nanocubes-graphene oxide nanocomposites as durable and highly active catalyst support for proton exchange membrane fuel cell. We show that...

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Autores principales: Lei, M., Wang, Z. B., Li, J. S., Tang, H. L., Liu, W. J., Wang, Y. G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4261163/
https://www.ncbi.nlm.nih.gov/pubmed/25491655
http://dx.doi.org/10.1038/srep07415
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author Lei, M.
Wang, Z. B.
Li, J. S.
Tang, H. L.
Liu, W. J.
Wang, Y. G.
author_facet Lei, M.
Wang, Z. B.
Li, J. S.
Tang, H. L.
Liu, W. J.
Wang, Y. G.
author_sort Lei, M.
collection PubMed
description Rapid degradation of cell performance still remains a significant challenge for proton exchange membrane fuel cell (PEMFC). In this work, we develop novel CeO(2) nanocubes-graphene oxide nanocomposites as durable and highly active catalyst support for proton exchange membrane fuel cell. We show that the use of CeO(2) as the radical scavenger in the catalysts remarkably improves the durability of the catalyst. The catalytic activity retention of Pt-graphene oxide-8 wt.% CeO(2) nanocomposites reaches as high as 69% after 5000 CV-cycles at a high voltage range of 0.8–1.23 V, in contrast to 19% for that of the Pt-graphene oxide composites. The excellent durability of the Pt-CeO(2) nanocubes-graphene oxide catalyst is attributed to the free radical scavenging activity of CeO(2), which significantly slows down the chemical degradation of Nafion binder in catalytic layers, and then alleviates the decay of Pt catalysts, resulting in the excellent cycle life of Pt-CeO(2)-graphene oxide nanocomposite catalysts. Additionally, the performance of single cell assembled with Nafion 211 membrane and Pt-CeO(2)-graphene oxide catalysts with different CeO(2) contents in the cathode as well as the Pt-C catalysts in the anode are also recorded and discussed in this study.
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spelling pubmed-42611632014-12-15 CeO(2) nanocubes-graphene oxide as durable and highly active catalyst support for proton exchange membrane fuel cell Lei, M. Wang, Z. B. Li, J. S. Tang, H. L. Liu, W. J. Wang, Y. G. Sci Rep Article Rapid degradation of cell performance still remains a significant challenge for proton exchange membrane fuel cell (PEMFC). In this work, we develop novel CeO(2) nanocubes-graphene oxide nanocomposites as durable and highly active catalyst support for proton exchange membrane fuel cell. We show that the use of CeO(2) as the radical scavenger in the catalysts remarkably improves the durability of the catalyst. The catalytic activity retention of Pt-graphene oxide-8 wt.% CeO(2) nanocomposites reaches as high as 69% after 5000 CV-cycles at a high voltage range of 0.8–1.23 V, in contrast to 19% for that of the Pt-graphene oxide composites. The excellent durability of the Pt-CeO(2) nanocubes-graphene oxide catalyst is attributed to the free radical scavenging activity of CeO(2), which significantly slows down the chemical degradation of Nafion binder in catalytic layers, and then alleviates the decay of Pt catalysts, resulting in the excellent cycle life of Pt-CeO(2)-graphene oxide nanocomposite catalysts. Additionally, the performance of single cell assembled with Nafion 211 membrane and Pt-CeO(2)-graphene oxide catalysts with different CeO(2) contents in the cathode as well as the Pt-C catalysts in the anode are also recorded and discussed in this study. Nature Publishing Group 2014-12-10 /pmc/articles/PMC4261163/ /pubmed/25491655 http://dx.doi.org/10.1038/srep07415 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 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 in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/
spellingShingle Article
Lei, M.
Wang, Z. B.
Li, J. S.
Tang, H. L.
Liu, W. J.
Wang, Y. G.
CeO(2) nanocubes-graphene oxide as durable and highly active catalyst support for proton exchange membrane fuel cell
title CeO(2) nanocubes-graphene oxide as durable and highly active catalyst support for proton exchange membrane fuel cell
title_full CeO(2) nanocubes-graphene oxide as durable and highly active catalyst support for proton exchange membrane fuel cell
title_fullStr CeO(2) nanocubes-graphene oxide as durable and highly active catalyst support for proton exchange membrane fuel cell
title_full_unstemmed CeO(2) nanocubes-graphene oxide as durable and highly active catalyst support for proton exchange membrane fuel cell
title_short CeO(2) nanocubes-graphene oxide as durable and highly active catalyst support for proton exchange membrane fuel cell
title_sort ceo(2) nanocubes-graphene oxide as durable and highly active catalyst support for proton exchange membrane fuel cell
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4261163/
https://www.ncbi.nlm.nih.gov/pubmed/25491655
http://dx.doi.org/10.1038/srep07415
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