Polymer blend membranes of sulfonated poly(arylene ether ketone) for direct methanol fuel cell

Jisu Choi; Dong Hwee Kim; Hyung Kyu Kim; Chongkyu Shin; Sung Chul Kim

doi:10.1016/j.memsci.2007.11.009

Polymer blend membranes of sulfonated poly(arylene ether ketone) for direct methanol fuel cell

Jisu Choi, Dong Hwee Kim, Hyung Kyu Kim, Chongkyu Shin, Sung Chul Kim

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

28 Citations (Scopus)

Abstract

The blend membranes of sulfonated poly(arylene ether ketone) (sPAEK) (IEC = 1.0 mequiv./g)/Nafion^® and the blend membranes of sPAEK (IEC = 1.0 mequiv./g)/sPAEK (IEC = 1.7 mequiv./g) were prepared. sPAEK with low IEC was introduced to reduce the methanol permeability through the membrane. Morphology, water uptake, proton conductivity and methanol permeability of the blend membranes were investigated by SEM, AFM, AC impedance spectroscopy and permeability measuring instrument. The cross-sections of blend membranes showed phase-separated morphologies. The effect of phase-separated morphology on the properties of blend membranes was investigated. The properties like water uptake, proton conductivity, and methanol permeability of sPAEK/Nafion^® blend membranes showed similar values with sPAEK and properties of sPAEK/sPAEK blend membranes showed intermediate values of two polymers due to the difference in morphology of the blend membranes. sPAEK/sPAEK blend membranes showed relatively high proton conductivity and lowered methanol permeability compared to Nafion^®. sPAEK/sPAEK blend membranes could be a competent substitution for Nafion^®.

Original language	English
Pages (from-to)	384-392
Number of pages	9
Journal	Journal of Membrane Science
Volume	310
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2007.11.009
Publication status	Published - 2008 Mar 5

Keywords

Blend membrane
DMFC
Nafion
Phase separation
Sulfonated poly(arylene ether ketone)

ASJC Scopus subject areas

Biochemistry
General Materials Science
Physical and Theoretical Chemistry
Filtration and Separation

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10.1016/j.memsci.2007.11.009

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title = "Polymer blend membranes of sulfonated poly(arylene ether ketone) for direct methanol fuel cell",

abstract = "The blend membranes of sulfonated poly(arylene ether ketone) (sPAEK) (IEC = 1.0 mequiv./g)/Nafion{\textregistered} and the blend membranes of sPAEK (IEC = 1.0 mequiv./g)/sPAEK (IEC = 1.7 mequiv./g) were prepared. sPAEK with low IEC was introduced to reduce the methanol permeability through the membrane. Morphology, water uptake, proton conductivity and methanol permeability of the blend membranes were investigated by SEM, AFM, AC impedance spectroscopy and permeability measuring instrument. The cross-sections of blend membranes showed phase-separated morphologies. The effect of phase-separated morphology on the properties of blend membranes was investigated. The properties like water uptake, proton conductivity, and methanol permeability of sPAEK/Nafion{\textregistered} blend membranes showed similar values with sPAEK and properties of sPAEK/sPAEK blend membranes showed intermediate values of two polymers due to the difference in morphology of the blend membranes. sPAEK/sPAEK blend membranes showed relatively high proton conductivity and lowered methanol permeability compared to Nafion{\textregistered}. sPAEK/sPAEK blend membranes could be a competent substitution for Nafion{\textregistered}.",

keywords = "Blend membrane, DMFC, Nafion, Phase separation, Sulfonated poly(arylene ether ketone)",

author = "Jisu Choi and Kim, {Dong Hwee} and Kim, {Hyung Kyu} and Chongkyu Shin and Kim, {Sung Chul}",

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AU - Choi, Jisu

AU - Kim, Dong Hwee

AU - Kim, Hyung Kyu

AU - Shin, Chongkyu

AU - Kim, Sung Chul

PY - 2008/3/5

Y1 - 2008/3/5

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AB - The blend membranes of sulfonated poly(arylene ether ketone) (sPAEK) (IEC = 1.0 mequiv./g)/Nafion® and the blend membranes of sPAEK (IEC = 1.0 mequiv./g)/sPAEK (IEC = 1.7 mequiv./g) were prepared. sPAEK with low IEC was introduced to reduce the methanol permeability through the membrane. Morphology, water uptake, proton conductivity and methanol permeability of the blend membranes were investigated by SEM, AFM, AC impedance spectroscopy and permeability measuring instrument. The cross-sections of blend membranes showed phase-separated morphologies. The effect of phase-separated morphology on the properties of blend membranes was investigated. The properties like water uptake, proton conductivity, and methanol permeability of sPAEK/Nafion® blend membranes showed similar values with sPAEK and properties of sPAEK/sPAEK blend membranes showed intermediate values of two polymers due to the difference in morphology of the blend membranes. sPAEK/sPAEK blend membranes showed relatively high proton conductivity and lowered methanol permeability compared to Nafion®. sPAEK/sPAEK blend membranes could be a competent substitution for Nafion®.

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Polymer blend membranes of sulfonated poly(arylene ether ketone) for direct methanol fuel cell

Abstract

Keywords

ASJC Scopus subject areas

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