کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1298412 1498351 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Proton conducting membranes composed of sulfonated poly(etheretherketone) and zirconium phosphate nanosheets for fuel cell applications
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Proton conducting membranes composed of sulfonated poly(etheretherketone) and zirconium phosphate nanosheets for fuel cell applications
چکیده انگلیسی

The composite membranes were prepared by dispersing particles (ZrP) or nanosheets (ZrP-NS) of layered zirconium phosphate hydrate (Zr(HPO4)2·nH2O) in sulfonated poly(etheretherketone) (SPEEK) with various ZrP or ZrP-NS contents (0–50 vol.%). Their chemical stability and proton conductivities at 40–150 °C were investigated, and compared for ZrP- and ZrP-NS-composite membranes. The enhanced chemical stability was confirmed in both composite membranes. The results of thermogravimetry (TG)–differential thermal analysis (DTA) and diffuse reflectance Fourier transform infra-red (FT-IR) spectroscopy suggests that hydrogen-bonds were formed at both the SPEEK/ZrP and the SPEEK/ZrP-NS interface and that enhanced stability is attributed to these bonds. The membrane with 50 vol.% ZrP-NS showed a high conductivity of 7.9 × 10− 2 S cm− 1 at 150 °C under saturated water vapor pressure, and a smaller relative humidity dependence of conductivity at 130 °C than the SPEEK membrane with 50 vol.% ZrP. The SPEEK/ZrP-NS composites were shown to have promising potential as membranes usable at 150 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 181, Issues 5–7, 11 March 2010, Pages 348–353
نویسندگان
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