کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5146430 | 1497351 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation on the durability of direct dimethyl ether fuel cell. Part II: Cathode degradation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Cathodic Pt/C catalyst degradation for a direct dimethyl ether fuel cell (DDFC) has been investigated after a 70.5 h galvostatic operation at 60 °C under ambient pressure. The cathode electrochemical active surface (EAS) reduces from 349 to 267 cm2 mgâ1 Pt after durability test. Cathode EAS loss is associated with the growth of Pt catalyst particles. XRD and TEM results show that the particle size of cathodic Pt catalyst increases from an original value of 3.0 nm to 5.4 nm. Furthermore, the anode failure accelerates dimethyl ether (DME) crossover, and consequently, poisoning of catalyst by absorbed DME and/or intermediates aggravates the degradation of cathodic Pt/C catalyst. The effect of anode degradation on the long-term performance of DDFC has been reported in companion article (Part I).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 26, 29 June 2017, Pages 16695-16699
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 26, 29 June 2017, Pages 16695-16699
نویسندگان
Le-Hong Xing, Ge-Ping Yin, Chun-Yu Du, Shu-Xin Cui, Ming-Hui Zuo, Hai-Peng Wang,