Cargando…

Interface-designed Membranes with Shape-controlled Patterns for High-performance Polymer Electrolyte Membrane Fuel Cells

Polymer electrolyte membrane fuel cell is a promising zero-emission power generator for stationary/automotive applications. However, key issues, such as performance and costs, are still remained for an economical commercialization. Here, we fabricated a high-performance membrane electrode assembly (...

Descripción completa

Detalles Bibliográficos
Autores principales: Jeon, Yukwon, Kim, Dong Jun, Koh, Jong Kwan, Ji, Yunseong, Kim, Jong Hak, Shul, Yong-Gun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4639844/
https://www.ncbi.nlm.nih.gov/pubmed/26552839
http://dx.doi.org/10.1038/srep16394
_version_ 1782399997005791232
author Jeon, Yukwon
Kim, Dong Jun
Koh, Jong Kwan
Ji, Yunseong
Kim, Jong Hak
Shul, Yong-Gun
author_facet Jeon, Yukwon
Kim, Dong Jun
Koh, Jong Kwan
Ji, Yunseong
Kim, Jong Hak
Shul, Yong-Gun
author_sort Jeon, Yukwon
collection PubMed
description Polymer electrolyte membrane fuel cell is a promising zero-emission power generator for stationary/automotive applications. However, key issues, such as performance and costs, are still remained for an economical commercialization. Here, we fabricated a high-performance membrane electrode assembly (MEA) using an interfacial design based on well-arrayed micro-patterned membranes including circles, squares and hexagons with different sizes, which are produced by a facile elastomeric mold method. The best MEA performance is achieved using patterned Nafion membrane with a circle 2 μm in size, which exhibited a very high power density of 1906 mW/cm(2) at 75 °C and Pt loading of 0.4 mg/cm(2) with 73% improvement compared to the commercial membrane. The improved performance are attributed to the decreased MEA resistances and increased surface area for higher Pt utilization of over 80%. From these enhanced properties, it is possible to operate at lower Pt loading of 0.2 mg/cm(2) with an outstanding performance of 1555 mW/cm(2) and even at air/low humidity operations.
format Online
Article
Text
id pubmed-4639844
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-46398442015-11-16 Interface-designed Membranes with Shape-controlled Patterns for High-performance Polymer Electrolyte Membrane Fuel Cells Jeon, Yukwon Kim, Dong Jun Koh, Jong Kwan Ji, Yunseong Kim, Jong Hak Shul, Yong-Gun Sci Rep Article Polymer electrolyte membrane fuel cell is a promising zero-emission power generator for stationary/automotive applications. However, key issues, such as performance and costs, are still remained for an economical commercialization. Here, we fabricated a high-performance membrane electrode assembly (MEA) using an interfacial design based on well-arrayed micro-patterned membranes including circles, squares and hexagons with different sizes, which are produced by a facile elastomeric mold method. The best MEA performance is achieved using patterned Nafion membrane with a circle 2 μm in size, which exhibited a very high power density of 1906 mW/cm(2) at 75 °C and Pt loading of 0.4 mg/cm(2) with 73% improvement compared to the commercial membrane. The improved performance are attributed to the decreased MEA resistances and increased surface area for higher Pt utilization of over 80%. From these enhanced properties, it is possible to operate at lower Pt loading of 0.2 mg/cm(2) with an outstanding performance of 1555 mW/cm(2) and even at air/low humidity operations. Nature Publishing Group 2015-11-10 /pmc/articles/PMC4639844/ /pubmed/26552839 http://dx.doi.org/10.1038/srep16394 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
Jeon, Yukwon
Kim, Dong Jun
Koh, Jong Kwan
Ji, Yunseong
Kim, Jong Hak
Shul, Yong-Gun
Interface-designed Membranes with Shape-controlled Patterns for High-performance Polymer Electrolyte Membrane Fuel Cells
title Interface-designed Membranes with Shape-controlled Patterns for High-performance Polymer Electrolyte Membrane Fuel Cells
title_full Interface-designed Membranes with Shape-controlled Patterns for High-performance Polymer Electrolyte Membrane Fuel Cells
title_fullStr Interface-designed Membranes with Shape-controlled Patterns for High-performance Polymer Electrolyte Membrane Fuel Cells
title_full_unstemmed Interface-designed Membranes with Shape-controlled Patterns for High-performance Polymer Electrolyte Membrane Fuel Cells
title_short Interface-designed Membranes with Shape-controlled Patterns for High-performance Polymer Electrolyte Membrane Fuel Cells
title_sort interface-designed membranes with shape-controlled patterns for high-performance polymer electrolyte membrane fuel cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4639844/
https://www.ncbi.nlm.nih.gov/pubmed/26552839
http://dx.doi.org/10.1038/srep16394
work_keys_str_mv AT jeonyukwon interfacedesignedmembraneswithshapecontrolledpatternsforhighperformancepolymerelectrolytemembranefuelcells
AT kimdongjun interfacedesignedmembraneswithshapecontrolledpatternsforhighperformancepolymerelectrolytemembranefuelcells
AT kohjongkwan interfacedesignedmembraneswithshapecontrolledpatternsforhighperformancepolymerelectrolytemembranefuelcells
AT jiyunseong interfacedesignedmembraneswithshapecontrolledpatternsforhighperformancepolymerelectrolytemembranefuelcells
AT kimjonghak interfacedesignedmembraneswithshapecontrolledpatternsforhighperformancepolymerelectrolytemembranefuelcells
AT shulyonggun interfacedesignedmembraneswithshapecontrolledpatternsforhighperformancepolymerelectrolytemembranefuelcells