کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6608177 | 459538 | 2016 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A simple physics-based equation for low-current impedance of a PEM fuel cell cathode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
A solvable physical model for impedance of the cathode catalyst layer (CCL) in a PEM fuel cell is developed. The model includes reaction activation and oxygen transport in the CCL; the proton transport is assumed to be fast. The expression for the CCL impedance Z is derived and represented as a sum of the charge-transfer Zct and oxygen transport Zox impedances. Availability of analytical expression for Zox enables to suggest a simple equation for the total CCL impedance, which includes oxygen and proton transport losses. This equation accurately reproduces a much more cumbersome exact solution obtained in Electrochim. Acta, 147 (2014) 773. An expression for the summit frequency of the oxygen transport arc is obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 196, 1 April 2016, Pages 231-235
Journal: Electrochimica Acta - Volume 196, 1 April 2016, Pages 231-235
نویسندگان
A.A. Kulikovsky,