کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9684973 | 1456219 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Grafted polymer electrolyte membrane for direct methanol fuel cells
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
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چکیده انگلیسی
The performance of direct methanol fuel cells (DMFC) with radiation grafted polymer electrolyte membranes (PEM) is reported. The membranes used poly ethylene-tetrafluoroethylene (ETFE), poly vinylidene fluoride (PVDF) and low-density polyethylene (LDPE) as base polymer films. The base polymer films were grafted with polystyrene sulfonic acid (PSSA) as proton-conducting groups. The effects of varying the degree of grafting (DOG) and the membrane thickness, which change the ion conductivity and methanol permeability, has a strong influence on methanol crossover of the DMFC and the performance of the DMFC. Typically, increasing the degree of grafting increases the ion conductivity and the methanol crossover. By adjusting the degree of grafting and the membrane thickness, membranes with suitable conductivity and low methanol crossover have been produced. The DMFC performance with such membranes was superior to that of with Nafion® membrane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 251, Issues 1â2, 1 April 2005, Pages 121-130
Journal: Journal of Membrane Science - Volume 251, Issues 1â2, 1 April 2005, Pages 121-130
نویسندگان
M. Shen, S. Roy, J.W. Kuhlmann, K. Scott, K. Lovell, J.A. Horsfall,