Multiplex lithography for multilevel multiscale architectures and its application to polymer electrolyte membrane fuel cell

Hyesung Cho; Sang Moon Kim; Yun Sik Kang; Junsoo Kim; Segeun Jang; Minhyoung Kim; Hyunchul Park; Jung Won Bang; Soonmin Seo; Kahp Yang Suh; Yung Eun Sung; Mansoo Choi

doi:10.1038/ncomms9484

Multiplex lithography for multilevel multiscale architectures and its application to polymer electrolyte membrane fuel cell

Hyesung Cho, Sang Moon Kim, Yun Sik Kang, Junsoo Kim, Segeun Jang, Minhyoung Kim, Hyunchul Park, Jung Won Bang, Soonmin Seo, Kahp Yang Suh, Yung Eun Sung^*, Mansoo Choi

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

The production of multiscale architectures is of significant interest in materials science, and the integration of those structures could provide a breakthrough for various applications. Here we report a simple yet versatile strategy that allows for the LEGO-like integrations of microscale membranes by quantitatively controlling the oxygen inhibition effects of ultraviolet-curable materials, leading to multilevel multiscale architectures. The spatial control of oxygen concentration induces different curing contrasts in a resin allowing the selective imprinting and bonding at different sides of a membrane, which enables LEGO-like integration together with the multiscale pattern formation. Utilizing the method, the multilevel multiscale Nafion membranes are prepared and applied to polymer electrolyte membrane fuel cell. Our multiscale membrane fuel cell demonstrates significant enhancement of performance while ensuring mechanical robustness. The performance enhancement is caused by the combined effect of the decrease of membrane resistance and the increase of the electrochemical active surface area.

Original language	English (US)
Article number	8484
Journal	Nature communications
Volume	6
DOIs	https://doi.org/10.1038/ncomms9484
State	Published - Sep 28 2015

ASJC Scopus subject areas

Chemistry(all)
Biochemistry, Genetics and Molecular Biology(all)
General
Physics and Astronomy(all)

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title = "Multiplex lithography for multilevel multiscale architectures and its application to polymer electrolyte membrane fuel cell",

abstract = "The production of multiscale architectures is of significant interest in materials science, and the integration of those structures could provide a breakthrough for various applications. Here we report a simple yet versatile strategy that allows for the LEGO-like integrations of microscale membranes by quantitatively controlling the oxygen inhibition effects of ultraviolet-curable materials, leading to multilevel multiscale architectures. The spatial control of oxygen concentration induces different curing contrasts in a resin allowing the selective imprinting and bonding at different sides of a membrane, which enables LEGO-like integration together with the multiscale pattern formation. Utilizing the method, the multilevel multiscale Nafion membranes are prepared and applied to polymer electrolyte membrane fuel cell. Our multiscale membrane fuel cell demonstrates significant enhancement of performance while ensuring mechanical robustness. The performance enhancement is caused by the combined effect of the decrease of membrane resistance and the increase of the electrochemical active surface area.",

author = "Hyesung Cho and {Moon Kim}, Sang and {Sik Kang}, Yun and Junsoo Kim and Segeun Jang and Minhyoung Kim and Hyunchul Park and {Won Bang}, Jung and Soonmin Seo and Suh, {Kahp Yang} and Sung, {Yung Eun} and Mansoo Choi",

note = "Funding Information: This work was supported by the Global Frontier R&D Program of the Center for Multiscale Energy Systems funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea (2011-0031561 and 2011-0031577) and the Institute for Basic Science in Korea (IBS-R006-G1). We thank D. Y. Lee for comments on FTIR analysis. Publisher Copyright: {\textcopyright} 2015 Macmillan Publishers Limited. All rights reserved.",

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doi = "10.1038/ncomms9484",

language = "English (US)",

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AU - Cho, Hyesung

AU - Moon Kim, Sang

AU - Sik Kang, Yun

AU - Kim, Junsoo

AU - Jang, Segeun

AU - Kim, Minhyoung

AU - Park, Hyunchul

AU - Won Bang, Jung

AU - Seo, Soonmin

AU - Suh, Kahp Yang

AU - Sung, Yung Eun

AU - Choi, Mansoo

N1 - Funding Information: This work was supported by the Global Frontier R&D Program of the Center for Multiscale Energy Systems funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea (2011-0031561 and 2011-0031577) and the Institute for Basic Science in Korea (IBS-R006-G1). We thank D. Y. Lee for comments on FTIR analysis. Publisher Copyright: © 2015 Macmillan Publishers Limited. All rights reserved.

PY - 2015/9/28

Y1 - 2015/9/28

N2 - The production of multiscale architectures is of significant interest in materials science, and the integration of those structures could provide a breakthrough for various applications. Here we report a simple yet versatile strategy that allows for the LEGO-like integrations of microscale membranes by quantitatively controlling the oxygen inhibition effects of ultraviolet-curable materials, leading to multilevel multiscale architectures. The spatial control of oxygen concentration induces different curing contrasts in a resin allowing the selective imprinting and bonding at different sides of a membrane, which enables LEGO-like integration together with the multiscale pattern formation. Utilizing the method, the multilevel multiscale Nafion membranes are prepared and applied to polymer electrolyte membrane fuel cell. Our multiscale membrane fuel cell demonstrates significant enhancement of performance while ensuring mechanical robustness. The performance enhancement is caused by the combined effect of the decrease of membrane resistance and the increase of the electrochemical active surface area.

AB - The production of multiscale architectures is of significant interest in materials science, and the integration of those structures could provide a breakthrough for various applications. Here we report a simple yet versatile strategy that allows for the LEGO-like integrations of microscale membranes by quantitatively controlling the oxygen inhibition effects of ultraviolet-curable materials, leading to multilevel multiscale architectures. The spatial control of oxygen concentration induces different curing contrasts in a resin allowing the selective imprinting and bonding at different sides of a membrane, which enables LEGO-like integration together with the multiscale pattern formation. Utilizing the method, the multilevel multiscale Nafion membranes are prepared and applied to polymer electrolyte membrane fuel cell. Our multiscale membrane fuel cell demonstrates significant enhancement of performance while ensuring mechanical robustness. The performance enhancement is caused by the combined effect of the decrease of membrane resistance and the increase of the electrochemical active surface area.

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Multiplex lithography for multilevel multiscale architectures and its application to polymer electrolyte membrane fuel cell

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