Anomalous behavior of proton transport and dimensional stability of sulfonated poly(arylene ether sulfone) nonwoven/silicate composite proton exchange membrane with dual phase co-continuous morphology 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Journal of Membrane Science
年/卷/期
2014 / 450 /
页码
235-241
ISSN号
0376-7388
作者单位
Korea Res Inst Chem Technol, Energy Mat Res Ctr, Taejon 305600, South Korea;Ulsan Natl Inst Sci & Technol, Interdisciplinary Sch Green Energy, Ulsan 689798, South Korea;Kangwon Natl Univ, Coll Engn, Dept Chem Engn, Chunchon 200701, Kangwondo, South Korea;Ulsan Natl Inst Sci & Technol, Interdisciplinary Sch Green Energy, Ulsan 689798, South Korea;Ulsan Natl Inst Sci & Technol, Interdisciplinary Sch Green Energy, Ulsan 689798, South Korea;Ulsan Natl Inst Sci & Technol, Interdisciplinary Sch Green Energy, Ulsan 689798, South Korea;
作者
Hong, Young Taik;Lee, Sang-Young;Won, Ji-Hye;Lee, Hyeon-Ji;Lim, Jun-Muk;Kim, Jung-Hwan;
摘要
Herein, anomalous behavior of proton conductivity and dimensional stability of sulfonated poly(arylene ether sulfone) (SPAES) nanofiber nonwoven fabric/silicate composite membrane (denoted as 'SN/S membrane') featuring dual phase co-continuous morphology, which could be potentially applied to proton exchange membrane fuel cells (PEMFCs), is systematically investigated. The SN/S membrane is fabricated via in situ sol-gel synthesis of tetraethoxysilane (TEOS)/3-glycidyloxypropyltrimethoxysilane (GPTMS) mixture directly inside the electrospun SPAES nonwoven. In comparison to a typical SPAES (matrix)/silicate (domain) composite membrane, the SN/S membrane having structural uniqueness provides significant improvement in relative humidify (RH) variation driven dimensional change, although its proton conductivity is decreased due to the presence of ionically inert continuous silicate phase. A noteworthy finding of this study is that the phase morphology of composite proton exchange membranes plays a crucial role in determining the membrane properties such as proton conductivity and dimensional stability. (C) 2013 Elsevier B.V. All rights reserved.
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关键词/主题词
Composite proton exchange membranes;Dual phase co-continuous morphology;Sulfonated poly(arylene ether sulfone);Silicate;Dimensional change;
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