کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5147197 | 1497383 | 2016 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of idling temperature on high temperature polymer electrolyte membrane fuel cell degradation under simulated start/stop cycling conditions
ترجمه فارسی عنوان
تأثیر دمای هوای خنک کننده بر تخریب سلول های سوختی غشای الکترولیتی پلیمر با دمای بالا تحت شرایط شبیه سازی شده دوچرخه سواری شروع / توقف
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Start/stop cycling are dynamic durability tests designed to simulate the fuel cell system shut-down and restarting that occurs in actual system operation. In the present work, commercial PBI-based MEAs were evaluated in a start/stop cycling test designed for combined heat and power application. Moreover, the start/stop cycling strategy has not been conducted under protective conditions that mitigate degradation of fuel cell materials over cycles. Instead, start/stop of the fuel cell has been conducted on a daily basis until completing 60 cycles or reaching end-of-life. Two idling temperatures after shutdown have been investigated: 25 and 100 °C. Thus, the effect of idling temperature has never been studied before in this fuel cell technology. Polarization curves, electrochemical impedance spectroscopy, cyclic, linear sweep voltammetry and μ-CT were utilized for MEA characterization. It was observed that system temperature during idling periods played an important role for HT-PEM MEAs lifetime. The test performed at the highest idling temperature exhibited larger degradation (â57 μV/h or â2.4 mV/cycle) than that at lower idling temperature (â13 μV/h or â0.6 mV/cycle). Thus, it was found that performance was mainly reduced due to catalyst deactivation and increased mass transfer limitations. Besides, electrochemical investigations showed both anode and cathode catalyst deterioration and μ-CT images also confirmed anode catalyst layer local thinning.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 42, 9 November 2016, Pages 19463-19474
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 42, 9 November 2016, Pages 19463-19474
نویسندگان
F. Javier Pinar, Maren Rastedt, Nadine Pilinski, Peter Wagner,