کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
180437 | 459380 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen oxidation reaction on thin platinum electrodes in the polymer electrolyte fuel cell
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Hydrogen oxidation reaction on thin platinum electrodes in the polymer electrolyte fuel cell Hydrogen oxidation reaction on thin platinum electrodes in the polymer electrolyte fuel cell](/preview/png/180437.png)
چکیده انگلیسی
A method for measuring the kinetics of the hydrogen oxidation reaction (HOR) in a fuel cell under enhanced mass transport conditions is presented. The measured limiting current density was roughly 1600 mA cmPt− 2, corresponding to a rate constant of the forward reaction in the Tafel step of 0.14 mol m− 2 s− 1 at 80 °C and 90% RH. The exchange current density for the HOR was determined using the slope at low overvoltages and was found to be 770 mA cmPt− 2. The high values for the limiting and exchange current densities suggest that the Pt loading in the anode catalyst can be reduced further without imposing measurable voltage loss.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 12, Issue 11, November 2010, Pages 1585–1588
Journal: Electrochemistry Communications - Volume 12, Issue 11, November 2010, Pages 1585–1588
نویسندگان
M. Wesselmark, B. Wickman, C. Lagergren, G. Lindbergh,