An experimental study on the hydrogen crossover in polymer electrolyte membrane fuel cells for various current densities
| Autor: | Min Soo Kim, Jongkil Oh, Kookil Han, Aeri Jung |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Hydrogen
Chemistry 020209 energy Mechanical Engineering Crossover Analytical chemistry chemistry.chemical_element 02 engineering and technology Building and Construction Electrolyte Management Monitoring Policy and Law 021001 nanoscience & nanotechnology Cathode Volumetric flow rate law.invention General Energy law 0202 electrical engineering electronic engineering information engineering Relative humidity Current (fluid) 0210 nano-technology Current density |
| Zdroj: | Applied Energy. 175:212-217 |
| ISSN: | 0306-2619 |
| Popis: | The effect of the clamping pressure and the relative humidity on gas crossover is studied in this research. It is central to this paper that the effect of the operating parameters on the hydrogen crossover is analyzed for various current densities. The performance and the hydrogen crossover rate are measured simultaneously according to the different clamping pressure and relative humidity at each current density. The effect of both parameters on the system performance coincides well with other researches. The higher hydrogen concentration and crossover rate are detected for the elevated clamping pressure and relative humidity. Interesting result from this experiment is that almost even hydrogen concentration at the cathode is detected with respect to current densities for all cases. When transforming this data with the flow rate of air supplied, the hydrogen crossover rate is gradually increased as the current density is increased. It means that the mass of the hydrogen gas transferred is increased for higher current densities. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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