کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9760101 1498040 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nafion-TiO2 hybrid membranes for medium temperature polymer electrolyte fuel cells (PEFCs)
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Nafion-TiO2 hybrid membranes for medium temperature polymer electrolyte fuel cells (PEFCs)
چکیده انگلیسی
A nanocomposite re-cast Nafion hybrid membrane containing titanium oxide calcined at T = 400 °C as an inorganic filler was developed in order to work at medium temperature in polymer electrolyte fuel cells (PEFCs) maintaining a suitable membrane hydration under fuel cell operative critical conditions. Nanometre TiO2 powder was synthesized via a sol-gel procedure by a rapid hydrolysis of Ti(OiPr)4. The membrane was prepared by mixing a Nafion-dimethylacetammide (DMAc) dispersion with a 3 wt% of TiO2 powder and casting the mixture by Doctor Blade technique. The resulting film was characterised in terms of water uptake and ion exchange capacity (IEC). The membrane was tested in a single cell from 80 to 130 °C in humidified H2/air. The obtained results were compared with the commercial Nafion115 and a home-made recast Nafion membrane. Power density values of 0.514 and 0.256 W cm−2 at 0.56 V were obtained at 110 and 130 °C, respectively, for the composite Nafion-Titania membrane. Preliminary tests carried out using steam reforming (SR) synthetic fuel at about 110 °C have highlighted the benefit of the inorganic filler introduction when PEFC operates at medium temperature and with processed hydrogen.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 152, 1 December 2005, Pages 16-21
نویسندگان
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