Multilayer-structured, SiO 2/sulfonated poly(phenylsulfone) composite membranes for proton exchange membrane fuel cells

Jung Ran Lee; Ji Hye Won; Kyung Suk Yoon; Young Taik Hong; Sang Young Lee

doi:10.1016/j.ijhydene.2011.07.085

Multilayer-structured, SiO ₂/sulfonated poly(phenylsulfone) composite membranes for proton exchange membrane fuel cells

Jung Ran Lee, Ji Hye Won, Kyung Suk Yoon, Young Taik Hong, Sang Young Lee

Department of Chemical and Biomolecular Engineering

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

22 Citations (Scopus)

Abstract

In an effort to improve the dimensional change and proton conductivity of sulfonated poly(phenylsulfone) (SPPSU) membranes and facilitate their application to proton exchange membrane fuel cells (PEMFC), we develop a new composite membrane featured with a multilayer structure. The multilayer structure consists of a SPPSU-impregnated SiO ₂ ceramic layer and a SPPSU layer. In contrast to a bulk composite membrane containing randomly dispersed SiO ₂ nanoparticles, this unusual multilayer-structured composite membrane has an independent ceramic layer comprising close-packed SiO ₂ nanoparticles and polyetherimide (PEI) binders. On the basis of structural characterization of the composite membranes, the effects of the multilayer structure on the membrane properties are investigated. The introduction of the SiO ₂ ceramic layer is found to be effective in not only suppressing dimensional change but also enhancing proton conductivity of the multilayered composite membrane. Another intriguing finding is that the decrease of proton conductivity at a low humidity condition encountered in conventional water-swollen membranes is retarded in the multilayered composite membrane. These improvements in the proton conductivity of the multilayered composite membrane are discussed by considering the morphological uniqueness and the water retention capability of hygroscopic SiO ₂ nanoparticles.

Original language	English
Pages (from-to)	6182-6188
Number of pages	7
Journal	International Journal of Hydrogen Energy
Volume	37
Issue number	7
DOIs	https://doi.org/10.1016/j.ijhydene.2011.07.085
Publication status	Published - 2012 Apr

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 research was also supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Knowledge Economy, Republic of Korea.

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2011.07.085

Cite this

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title = "Multilayer-structured, SiO 2/sulfonated poly(phenylsulfone) composite membranes for proton exchange membrane fuel cells",

abstract = "In an effort to improve the dimensional change and proton conductivity of sulfonated poly(phenylsulfone) (SPPSU) membranes and facilitate their application to proton exchange membrane fuel cells (PEMFC), we develop a new composite membrane featured with a multilayer structure. The multilayer structure consists of a SPPSU-impregnated SiO 2 ceramic layer and a SPPSU layer. In contrast to a bulk composite membrane containing randomly dispersed SiO 2 nanoparticles, this unusual multilayer-structured composite membrane has an independent ceramic layer comprising close-packed SiO 2 nanoparticles and polyetherimide (PEI) binders. On the basis of structural characterization of the composite membranes, the effects of the multilayer structure on the membrane properties are investigated. The introduction of the SiO 2 ceramic layer is found to be effective in not only suppressing dimensional change but also enhancing proton conductivity of the multilayered composite membrane. Another intriguing finding is that the decrease of proton conductivity at a low humidity condition encountered in conventional water-swollen membranes is retarded in the multilayered composite membrane. These improvements in the proton conductivity of the multilayered composite membrane are discussed by considering the morphological uniqueness and the water retention capability of hygroscopic SiO 2 nanoparticles.",

author = "Lee, {Jung Ran} and Won, {Ji Hye} and Yoon, {Kyung Suk} and Hong, {Young Taik} 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 research was also supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Knowledge Economy, Republic of Korea.",

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AU - Won, Ji Hye

AU - Yoon, Kyung Suk

AU - Hong, Young Taik

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 research was also supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Knowledge Economy, Republic of Korea.

PY - 2012/4

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N2 - In an effort to improve the dimensional change and proton conductivity of sulfonated poly(phenylsulfone) (SPPSU) membranes and facilitate their application to proton exchange membrane fuel cells (PEMFC), we develop a new composite membrane featured with a multilayer structure. The multilayer structure consists of a SPPSU-impregnated SiO 2 ceramic layer and a SPPSU layer. In contrast to a bulk composite membrane containing randomly dispersed SiO 2 nanoparticles, this unusual multilayer-structured composite membrane has an independent ceramic layer comprising close-packed SiO 2 nanoparticles and polyetherimide (PEI) binders. On the basis of structural characterization of the composite membranes, the effects of the multilayer structure on the membrane properties are investigated. The introduction of the SiO 2 ceramic layer is found to be effective in not only suppressing dimensional change but also enhancing proton conductivity of the multilayered composite membrane. Another intriguing finding is that the decrease of proton conductivity at a low humidity condition encountered in conventional water-swollen membranes is retarded in the multilayered composite membrane. These improvements in the proton conductivity of the multilayered composite membrane are discussed by considering the morphological uniqueness and the water retention capability of hygroscopic SiO 2 nanoparticles.

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