کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1288836 | 973275 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of cathode micro-porous layer on performance of anion-exchange membrane direct ethanol fuel cells Effect of cathode micro-porous layer on performance of anion-exchange membrane direct ethanol fuel cells](/preview/png/1288836.png)
The effect of a cathode micro-porous layer that is composed of carbon powder or carbon nanotubes on cell performance is investigated. Polarization curves, together with the respective anode and cathode potentials, are measured. The results show that the cathode potential can be significantly improved with adding a hydrophobic micro-porous layer between the cathode catalyst layer and the gas-diffusion layer. The increased performance with the cathode micro-porous layer is mainly attributed to the fact that the cathode water flooding can be alleviated as a result of the reduced water crossover, which consequently facilitates the transport of oxygen to the catalyst layer. It is also found that a crack-free micro-porous layer made of carbon nanotubes gives a much higher cathode potential compared with a micro-porous layer composed of carbon powder.
Journal: Journal of Power Sources - Volume 196, Issue 4, 15 February 2011, Pages 1802–1807