کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1282617 | 1497588 | 2011 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Optimization of components and assembling in a PEM electrolyzer stack Optimization of components and assembling in a PEM electrolyzer stack](/preview/png/1282617.png)
An optimization study of components and assembling characteristics for a proton exchange membrane (PEM) short stack electrolyzer (3 cells of 100 cm2 geometrical area) was carried out. The electrochemical properties were investigated by polarization, impedance spectroscopy and chrono-potentiometric measurements. A decrease of the ohmic contact resistance between the bipolar plates and the electrode backing layer was obtained by using an appropriate thickness for the gas diffusion layers/current collectors as well as by an optimization of stack compression. The amount of H2 produced was ∼90 l h−1 at 60 A (600 mA cm−2) and 75 °C under 300 W of applied electrical power. No significant leakage or gas recombination was observed. The stack electrical efficiency was 75% and 88%, at 60 A and 75 °C, with respect to the low and high heating value of hydrogen, respectively.
Journal: International Journal of Hydrogen Energy - Volume 36, Issue 5, March 2011, Pages 3333–3339