کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
763981 1462881 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of the hydrophilic and hydrophobic characteristics of the gas diffusion medium on polymer electrolyte fuel cell performance under non-humidification condition
ترجمه فارسی عنوان
اثر ویژگی های هیدرولیکی و هیدروفی فیزیکی محیط انتشار گاز بر عملکرد سلول سوخت الکترولیتی پلیمر تحت شرایط غیر رطوبت
کلمات کلیدی
سلول های سوختی، اشباع آب، محیط انتشار گاز، بدون رطوبت
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی


• GDM played significant role in the PEFC performance under dry condition.
• Hydrophobicity of GDM affect the water condensation at the surface.
• Optimum water saturation in the porous layer was between 0.1 and 0.3.

Water is a significant component of polymer electrolyte fuel cells, affecting the proton conductivity in the membrane electrolyte. Therefore, polymer electrolyte fuel cells are generally operated with a humidifier to maintain a high relative humidity of the supplied gases; however, the humidifier contributes additional weight and cost. Although many studies have attempted to develop polymer electrolyte fuel cells without a humidifier, the studies have been mainly focused on the self-humidified membrane electrolyte and catalyst layer. In this paper, the author investigates the effect of polytetrafluoroethylene coated gas diffusion medium on the water content in the membrane electrolyte. The water condensation on the surfaces of the gas diffusion medium is visualised when the polymer electrolyte fuel cell is operated under non-humidification conditions. Numerical simulation suggests that the optimum water saturation is between 0.1 and 0.3 at the gas diffusion medium to hydrate the membrane electrolyte sufficiently without significantly blocking the diffused species under non-humidification conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 81, May 2014, Pages 220–230
نویسندگان
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