کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7718646 | 1497485 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Self-humidifying membrane electrode assembly prepared by adding microcrystalline cellulose in anode catalyst layer as preserve moisture
ترجمه فارسی عنوان
مونتاژ الکترودهای غشایی خود رطوبت، با افزودن سلولز میکرو کریستاللیز در لایه کاتالیت آند، به عنوان حفظ رطوبت
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
A novel self-humidifying membrane electrode assemblies (MEAs) with the addition of microcrystalline cellulose (MCC) as a hygroscopic agent into anode catalyst layer was prepared to improve the performance of proton exchange membrane fuel cell (PEMFC) under low humidity conditions. The MEAs were characterized by SEM, contact angles and water uptake measurements. The MEAs with addition of MCC exhibit excellent self-humidifying single cell performance, the cell temperature for self-humidification running is up to 60 °C. As an optimized MEA with 4 wt.ï¼
MCC in its anode catalyst layer, its current density at 0.6Â V could be up to 760Â mAÂ cmâ2 under 20% of relative humidity, and remains at 680Â mAÂ cmâ2 after 22Â h long time continuous testing, the attenuation of the current density is only 10%. While the current density of the blank MEA without addition of MCC degraded sharply from 300Â mAÂ cmâ2 to 110Â mAÂ cmâ2, the attenuation of the current density is high up to 70% within 2Â h.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 24, 13 August 2014, Pages 12842-12848
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 24, 13 August 2014, Pages 12842-12848
نویسندگان
Sanying Hou, Shijun Liao, Dai Dang, Haobin Zou, Ting Shu, Li Du,