کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
195506 | 459815 | 2006 | 8 صفحه PDF | دانلود رایگان |
Sulfonated polyimide (SPI) membranes have been evaluated as electrolyte membranes in direct methanol fuel cells (DMFCs). The membrane–electrode assembly (MEA) was made by hot-pressing the membrane, an anode and a cathode, catalyzed with PtRu/CB (PtRu dispersed on carbon black) and Pt/CB bound with Nafion® ionomer, respectively. The performance of the cell based on SPI was compared with that of Nafion® 112 in various operation conditions such as cell temperature (Tcell), cathode relative humidity (RH), and methanol concentration (CMeOH). The methanol crossover at the cell based on SPI was a half of Nafion® 112, resulting in the improved cell efficiency. Advantage of the use of SPI became much distinctive from the conventional Nafion® 112 when the DMFC was operated at a higher Tcell or a higher CMeOH.
Journal: Electrochimica Acta - Volume 51, Issue 21, 1 June 2006, Pages 4497–4504