In situ hybrid Nafion/SiO2-P2O5 proton conductors for high-temperature and low-humidity proton exchange membrane fuel cells

Soon Yong So; Sung Chul Kim; Sang Young Lee

doi:10.1016/j.memsci.2010.05.008

In situ hybrid Nafion/SiO₂-P₂O₅ proton conductors for high-temperature and low-humidity proton exchange membrane fuel cells

Soon Yong So, Sung Chul Kim, Sang Young Lee

Department of Chemical and Biomolecular Engineering

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

15 Citations (Scopus)

Abstract

A proton-conducting membrane demonstrating excellent proton conductivity at high-temperature/low-humidity conditions as well as at fully hydrated states is an urgent demand for proton exchange membrane fuel cells (PEMFC). In this study, in a bid to achieve this goal, we develop a new hybrid membrane, which is based on incorporating SiO₂-P₂O₅ glass electrolytes into hydrophilic channels of Nafion115 by in situ sol-gel synthesis of tetraethoxysilane (TEOS) and trimethylphosphate (TMP). The effect of SiO₂-P₂O₅ content on the morphology, state of water, and water uptake of the hybrid membranes is quantitatively identified. Not only the well-connected/enlarged hydrophilic channels but also the increase in the number of free/bound water molecules is observed in the hybrid membranes. These interesting features are expected to enable the hybrid membranes to present the higher proton conductivity than the pristine Nafion115, which becomes more noticeable at high-temperature/low-humidity conditions.

Original language	English
Pages (from-to)	210-216
Number of pages	7
Journal	Journal of Membrane Science
Volume	360
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2010.05.008
Publication status	Published - 2010 Sept

Bibliographical note

Funding Information:
This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy. This work was also supported by the National Research Foundation of Korea , Grant funded by the Korean Government (MEST) ( NRF-2009-C1AAA001-2009-0093307 ). This research was also supported by the Converging Research Center Program through the National Research Foundation of Korea (NRF) , funded by the Ministry of Education, Science and Technology ( 2009-0082083 ).

All Science Journal Classification (ASJC) codes

Biochemistry
Materials Science(all)
Physical and Theoretical Chemistry
Filtration and Separation

Access to Document

10.1016/j.memsci.2010.05.008

Cite this

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title = "In situ hybrid Nafion/SiO2-P2O5 proton conductors for high-temperature and low-humidity proton exchange membrane fuel cells",

abstract = "A proton-conducting membrane demonstrating excellent proton conductivity at high-temperature/low-humidity conditions as well as at fully hydrated states is an urgent demand for proton exchange membrane fuel cells (PEMFC). In this study, in a bid to achieve this goal, we develop a new hybrid membrane, which is based on incorporating SiO2-P2O5 glass electrolytes into hydrophilic channels of Nafion115 by in situ sol-gel synthesis of tetraethoxysilane (TEOS) and trimethylphosphate (TMP). The effect of SiO2-P2O5 content on the morphology, state of water, and water uptake of the hybrid membranes is quantitatively identified. Not only the well-connected/enlarged hydrophilic channels but also the increase in the number of free/bound water molecules is observed in the hybrid membranes. These interesting features are expected to enable the hybrid membranes to present the higher proton conductivity than the pristine Nafion115, which becomes more noticeable at high-temperature/low-humidity conditions.",

author = "So, {Soon Yong} and Kim, {Sung Chul} and Lee, {Sang Young}",

note = "Funding Information: This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy. This work was also supported by the National Research Foundation of Korea , Grant funded by the Korean Government (MEST) ( NRF-2009-C1AAA001-2009-0093307 ). This research was also supported by the Converging Research Center Program through the National Research Foundation of Korea (NRF) , funded by the Ministry of Education, Science and Technology ( 2009-0082083 ).",

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AU - So, Soon Yong

AU - Kim, Sung Chul

AU - Lee, Sang Young

N1 - Funding Information: This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy. This work was also supported by the National Research Foundation of Korea , Grant funded by the Korean Government (MEST) ( NRF-2009-C1AAA001-2009-0093307 ). This research was also supported by the Converging Research Center Program through the National Research Foundation of Korea (NRF) , funded by the Ministry of Education, Science and Technology ( 2009-0082083 ).

PY - 2010/9

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N2 - A proton-conducting membrane demonstrating excellent proton conductivity at high-temperature/low-humidity conditions as well as at fully hydrated states is an urgent demand for proton exchange membrane fuel cells (PEMFC). In this study, in a bid to achieve this goal, we develop a new hybrid membrane, which is based on incorporating SiO2-P2O5 glass electrolytes into hydrophilic channels of Nafion115 by in situ sol-gel synthesis of tetraethoxysilane (TEOS) and trimethylphosphate (TMP). The effect of SiO2-P2O5 content on the morphology, state of water, and water uptake of the hybrid membranes is quantitatively identified. Not only the well-connected/enlarged hydrophilic channels but also the increase in the number of free/bound water molecules is observed in the hybrid membranes. These interesting features are expected to enable the hybrid membranes to present the higher proton conductivity than the pristine Nafion115, which becomes more noticeable at high-temperature/low-humidity conditions.

AB - A proton-conducting membrane demonstrating excellent proton conductivity at high-temperature/low-humidity conditions as well as at fully hydrated states is an urgent demand for proton exchange membrane fuel cells (PEMFC). In this study, in a bid to achieve this goal, we develop a new hybrid membrane, which is based on incorporating SiO2-P2O5 glass electrolytes into hydrophilic channels of Nafion115 by in situ sol-gel synthesis of tetraethoxysilane (TEOS) and trimethylphosphate (TMP). The effect of SiO2-P2O5 content on the morphology, state of water, and water uptake of the hybrid membranes is quantitatively identified. Not only the well-connected/enlarged hydrophilic channels but also the increase in the number of free/bound water molecules is observed in the hybrid membranes. These interesting features are expected to enable the hybrid membranes to present the higher proton conductivity than the pristine Nafion115, which becomes more noticeable at high-temperature/low-humidity conditions.

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