کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1288644 973272 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of poly(arylene ether sulfone)s with locally and densely sulfonated pentiptycene pendants as highly conductive polymer electrolyte membranes
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Synthesis of poly(arylene ether sulfone)s with locally and densely sulfonated pentiptycene pendants as highly conductive polymer electrolyte membranes
چکیده انگلیسی

Poly(aryl ether sulfone)s containing sulfonated pentiptycene groups SPES-x-PPD are firstly synthesized through nucleophilic aromatic substitution polycondensation by using pentiptycene-6,13-diol, bis(4-hydroxyphenyl) sulfone and 4,4′-difluorodiphenyl sulfone, followed by postsulfonation with concentrated sulfuric acid at room temperature. The structures of SPES-x-PPD are characterized by IR, 1H NMR and 13C NMR spectra. These ionomers generally show high thermal stability. Transmission electron microscopic observations reveal that SPES-x-PPD membranes form well-defined microphase separated structures. SPES-40-PPD with the IEC value 2.36 mmol g−1 shows conductivity of 2.6 × 10−1 S cm−1 which is much higher than that of perfluorinated Nafion 117 membrane (1.1 × 10−1 S cm−1) at 80 °C and 94% RH. At 80 °C and 34% RH, SPES-40-PPD membrane displays the conductivity of 2.7 × 10−3 S cm−1 which is comparable with that of Nafion 117 membrane (3.0 × 10−3 S cm−1).

Figure optionsDownload as PowerPoint slideHighlights
► The synthesis of poly(aryl ether sulfone)s containing locally and densely sulfonated pentiptycene groups (SPES-x-PPD) is firstly reported.
► The well-defined micro-phase separated structures is observed for SPES-x-PPD membranes.
► These novel SPES-x-PPD membranes achieved high proton conductivity in a range of 34–94% RH.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 196, Issue 23, 1 December 2011, Pages 9876–9883
نویسندگان
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