Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 13427-13433 |
| Number of pages | 7 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 38 |
| Issue number | 30 |
| DOIs | |
| State | Published - 8 Oct 2013 |
Keywords
- Fuel cell Anion-exchange membrane fuel cell Air-breathing direct ethanol fuel cell Anion-exchange membrane Overshoot/undershoot behavior Water flooding