کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1736056 1016204 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polymer electrolyte fuel cells based on phosphoric acid doped polybenzimidazole (PBI) membranes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Polymer electrolyte fuel cells based on phosphoric acid doped polybenzimidazole (PBI) membranes
چکیده انگلیسی

In order to make fuel cells with high power density the structure and morphology for the three-dimensional gas diffusion electrodes (GDEs) are very important. A preparation technique for GDEs for phosphoric acid doped polybenzimidazole (PBI) is presented. Teflon treatment of the backing material was found to be beneficial for the performance of the electrodes, and explained by higher total porosity. In general the open circuit voltage (OCV) with PBI-based cells is 0.9 V. The observed low OCV was explained by slow kinetic for the oxygen reduction and cross over of the reactants. The performance of the fuel cells is found to increase with increasing temperature; this was explained by faster reaction kinetic and higher membrane conductivity. A typical power output was 0.3–0.4 W cm−2 at 0.6 V and 175 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 32, Issue 4, April 2007, Pages 418–422
نویسندگان
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