An Experimental Study of Scale-up, Oxidant, and Response Characteristics in PEM Fuel Cells
| Autor: | Jiwoong Ahn, Kiwon Park, Nguyen Duy Vinh, Kap-Seung Choi, Hyung-Man Kim, Gun-Yong Hwang, Jungkoo Lee |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
business.industry Electrical engineering Energy Engineering and Power Technology Proton exchange membrane fuel cell chemistry.chemical_element Unitized regenerative fuel cell Oxygen Power (physics) chemistry Stack (abstract data type) Optoelectronics Electrical and Electronic Engineering Current (fluid) business Polarization (electrochemistry) Voltage |
| Zdroj: | IEEE Transactions on Energy Conversion. 29:727-734 |
| ISSN: | 1558-0059 0885-8969 |
| Popis: | It is important for fuel cell to become flexible in order to accommodate the situations of application areas for reducing costs and expanding coverage. Scale ups in series and parallel to 1-kW class proton exchange membrane (PEM) fuel cell stack are characterized experimentally with oxidant as air and oxygen. Through a serial scaled-up 4-cell stack with an active area of 25 cm 2 and a parallel scaled-up single cell with an active area of 100 cm 2 , respectively, the 1-kW class 20-cell stack with an active area of 150 cm 2 per cell is scaled up from the basic unit cell with maintaining their performances. The polarization and power curves of the 1-kW class PEM fuel cell stack with the reactants H 2 /air and H 2 /O 2 are evaluated. Sufficient power of the PEM fuel cell can operate at flexible nominal current of 40-80 A and nominal voltage of 12-15 V for providing durability and balance between cells. The 1-kW class PEM fuel cell stack is characterized through the comparison of cell voltage differences utilizing H 2 /air and H 2 /O 2 . Both cell voltages with H 2 /air and H 2 /O 2 follow well the one-twentieth of the responding stack voltages with the small difference. |
| Databáze: | OpenAIRE |
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