A study on sulfonated poly(arylene ether sulfone) membranes containing two different types of SiO2 for a high temperature and low-humidified polymer electrolyte fuel cell

Sung Mi Park; Young Woo Choi; Tae Hyun Yang; Jin Soo Park; Sung Hyun Kim

doi:10.1007/s11814-012-0120-2

A study on sulfonated poly(arylene ether sulfone) membranes containing two different types of SiO₂ for a high temperature and low-humidified polymer electrolyte fuel cell

Sung Mi Park, Young Woo Choi, Tae Hyun Yang, Jin Soo Park, Sung Hyun Kim

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

8 Citations (Scopus)

Abstract

Two different types of silica oxide were prepared as filler in sulfonated polymers for fuel cell applications operated under water deficient environment. SiO₂ nanoparticle and thiol-embedded SiO₂ nanoparticles were mechanically mixed with sulfonated (arylene ether sulfone) solutions, and then the mixtures were cast to prepare composite membranes. The composite membranes with different amount of SiO₂ were prepared to investigate the effect of two types of SiO₂ nanoparticles on ionic conductivity with relative humidity at 120 °C. In addition, ion exchange capacity, water uptake, thermogravitational analysis, differential scanning calorimetry were studied. As results, the composite membranes containing thiol-embedded SiO₂ showed better water-channel forming ability at low relative humidity less than 50% in this study. Under full hydration of the composite membranes, the composite membranes containing pure SiO₂ nano-particles have higher ionic conductivity since the thiol-embedded SiO₂ might cause steric hindrance to make water channel well connected. Thus, below 50% relative humidity, the composite membranes containing 10 wt% of thiol-embedded SiO₂ showed the best ionic conductivity. It is very promising for polymer electrolyte fuel cells operated normally under 50% relative humidity at cathode.

Original language	English
Pages (from-to)	87-94
Number of pages	8
Journal	Korean Journal of Chemical Engineering
Volume	30
Issue number	1
DOIs	https://doi.org/10.1007/s11814-012-0120-2
Publication status	Published - 2013 Jan

Bibliographical note

Funding Information:
This work was supported by the project, 2009301003003A and 20113020030040, of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant and the project, 10037748, of Korea Evaluation Institute of Industrial Technology (KEIT) grant funded by the Korea government Ministry of Knowledge Economy.

Keywords

Composite Membrane
Low-humidified
Polymer Electrolyte Membrane Fuel Cell
Proton Conductivity
Silica

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

Access to Document

10.1007/s11814-012-0120-2

Cite this

A study on sulfonated poly(arylene ether sulfone) membranes containing two different types of SiO₂ for a high temperature and low-humidified polymer electrolyte fuel cell. / Park, Sung Mi; Choi, Young Woo; Yang, Tae Hyun et al.
In: Korean Journal of Chemical Engineering, Vol. 30, No. 1, 01.2013, p. 87-94.

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

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abstract = "Two different types of silica oxide were prepared as filler in sulfonated polymers for fuel cell applications operated under water deficient environment. SiO2 nanoparticle and thiol-embedded SiO2 nanoparticles were mechanically mixed with sulfonated (arylene ether sulfone) solutions, and then the mixtures were cast to prepare composite membranes. The composite membranes with different amount of SiO2 were prepared to investigate the effect of two types of SiO2 nanoparticles on ionic conductivity with relative humidity at 120 °C. In addition, ion exchange capacity, water uptake, thermogravitational analysis, differential scanning calorimetry were studied. As results, the composite membranes containing thiol-embedded SiO2 showed better water-channel forming ability at low relative humidity less than 50% in this study. Under full hydration of the composite membranes, the composite membranes containing pure SiO2 nano-particles have higher ionic conductivity since the thiol-embedded SiO2 might cause steric hindrance to make water channel well connected. Thus, below 50% relative humidity, the composite membranes containing 10 wt% of thiol-embedded SiO2 showed the best ionic conductivity. It is very promising for polymer electrolyte fuel cells operated normally under 50% relative humidity at cathode.",

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