کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5148532 | 1497372 | 2017 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transient analysis of passive vapor-feed DMFC fed with neat methanol
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Transient analysis of passive vapor-feed DMFC fed with neat methanol Transient analysis of passive vapor-feed DMFC fed with neat methanol](/preview/png/5148532.png)
چکیده انگلیسی
A transient model is presented to investigate the transport phenomena for passive vapor-feed direct methanol fuel cell (DMFC). The pervaporation membrane and vapor transport layer are considered for the formation and transport of methanol vapor, respectively. We attempt to provide insight into the transient mass transport characteristics of DMFCs by testing different operation conditions, including current density, open area ratio of the vaporizer, and membrane thickness. The results show that the methanol crossover rate and water transport from the cathode to the anode are the key factors for improving the cell performance, and indicate that fuel efficiency, energy efficiency and energy density of the DMFCs are improved by increasing current density, decreasing open ratio of the vaporizer or increasing membrane thickness due to the reduced methanol crossover rate. The cathode micro-porous layer (MPL) is useful in enhancing water recovery flux and decreasing water losses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 5, 2 February 2017, Pages 3222-3239
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 5, 2 February 2017, Pages 3222-3239
نویسندگان
Ting Guo, Jing Sun, Junfeng Zhang, Hao Deng, Xu Xie, Kui Jiao, Xuri Huang,