کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1273349 | 1497515 | 2013 | 7 صفحه PDF | دانلود رایگان |
• An air-breathing AEM DEFC with Pt-free electrodes is designed and investigated.
• Air-breathing AEM DEFC yields a peak power density of 38 mW cm−2 at room temperature.
• The overshoot/undershoot behaviors of cell voltage are avoided in AEM DEFCs.
• The cathode water flooding behavior occurs in the air-breathing AEM DEFC.
An air-breathing direct ethanol fuel cell (DEFC) with an anion-exchange membrane (AEM) and Pt-free electrodes is designed and investigated. Particular attention is paid to studying the performance characteristics of the air-breathing AEM DEFC. Experimental results reveal that this air-breathing AEM DEFC yields a peak power density as high as 38 mW cm−2 at room temperature, which is comparable to the conventional Pt-based proton exchange membrane direct methanol fuel cells (PEM DMFCs). The overshoot/undershoot behaviors of both the cell voltage and cell temperature are avoided in the air-breathing AEM DEFC due to the use of ethanol-tolerant cathode catalyst. It is also found that the cathode water flooding behavior occurs in this air-breathing AEM DEFC, thus lowering the cell performance.
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 30, 8 October 2013, Pages 13427–13433