کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1293183 1498031 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cross-linked tri-side chains poly(arylene ether ketone)s containing pendant alkylsulfonic acid groups for proton exchange membranes
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Cross-linked tri-side chains poly(arylene ether ketone)s containing pendant alkylsulfonic acid groups for proton exchange membranes
چکیده انگلیسی

In order to enhance the ion exchange capacity (IEC) in the proton exchange membrane materials, a novel sulfonated poly(arylene ether ketone) (SQNPAEK) containing tri-side chains in one unit is synthesized by direct polymerization. The SQNPAEK membrane shows excellent proton conductivity up to 0.102 S cm−1 at 80 °C, which are superior to previous side-chain-type and main-chain-type sulfonated polymer membranes at similar IEC. Cross-linked membranes are then obtained by a heating reaction at 190 °C, using 4,4′-diglycidyl (3,3′,5,5′-tetramethylbiphenyl) epoxy resin (TMBP) as the cross-linker. As expected, the water uptake and the methanol permeability of the cross-linked membranes decrease with increasing the content of TMBP. Compared to Nafion 117, the cross-linked membranes show comparable proton conductivities and much higher selectivities, which are in the range of 5.18 × 105–1.46 × 106 S s−1 cm3. Other properties of the cross-linked membranes, such as mechanical properties, thermal properties, are also investigated. All the results indicated that the cross-linked membranes based on SQNPAEKs and TMBP are promising candidate for direct methanol fuel cells.

Figure optionsDownload as PowerPoint slideHighlights
► Novel side-chain-type polymer with sulphonic acid groups was synthesized.
► Cross-linked membranes were obtained by thermal curing with TMBP.
► The cross-linked membranes had excellent selectivities and high proton conductivity.
► Other measurement showed that the cross-linked membranes had excellent properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 201, 1 March 2012, Pages 142–150
نویسندگان
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