کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1293673 | 973559 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A study of water adsorption and desorption by a PBI-H3PO4 membrane electrode assembly
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A study of water adsorption and desorption by a PBI-H3PO4 membrane electrode assembly A study of water adsorption and desorption by a PBI-H3PO4 membrane electrode assembly](/preview/png/1293673.png)
چکیده انگلیسی
Data corresponding to the isotherms for the equilibrium water content of a PolyBenzImidazole (PBI)-H3PO4 High Temperature Membrane Electrode Assembly (HT-MEA) are presented over a range of temperatures from 30 °C to 180 °C. The data show values for the ratio of water to acid which range from 4.0 at 70 °C to 0.2 at −160 °C at 30 kPa of water vapor pressure. In addition to the equilibrium data, rates of adsorption are shown to have time constants on the order of 500 s and 2500 s at 70 °C and 50 °C, respectively. At temperatures above 100 °C the time constants for adsorption are on the order of 100 s. These data allow for the calculation of “acid dilution” in this HT-MEA during low-temperature excursions and start up/shut down.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 195, Issue 24, 15 December 2010, Pages 8194–8197
Journal: Journal of Power Sources - Volume 195, Issue 24, 15 December 2010, Pages 8194–8197
نویسندگان
T. Gu, S. Shimpalee, J.W. Van Zee, C.-Y. Chen, C.-W. Lin,