Closed-loop hydration dynamics in the membrane of a PEM fuel cell
โ Scribed by Syed K. Ahmed; Donald J. Chmielewski
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 949 KB
- Volume
- 196
- Category
- Article
- ISSN
- 0378-7753
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๐ SIMILAR VOLUMES
We studied the isothermal hydrogen adsorption and reaction at the carbon and platinum (Pt) surface of the humidified E-TEK electrode of a polymer electrolyte fuel cell (PEMFC) with a Nafion ยฎ 117 membrane by impedance spectroscopy at 30 and 50 โข C. We found three rate-limiting steps, one of them is
a b s t r a c t Incorrect controlling of the pressure, temperature, flow rate and humidity levels of reactant gases can inflict severe and sometimes irreversible damages on the PEM fuel cells. Most important damage is leakage between the two sides of cathode and anode that may lead to physical defe
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## Abstract The effects of inhomogeneous compression of gas diffusion layers (GDLs) on local transport phenomena within a polymer electrolyte membrane (PEM) fuel cell were studied theoretically. The inhomogeneous compression induced by the rib/channel structure of the flow field plate causes partia