Development of a Durable Startup Process for Repetitive Startup-Shutdown Cycling via a Dummy Load
- Development of a Durable Startup Process for Repetitive Startup-Shutdown Cycling via a Dummy Load
- 조은애; 김재홍; 조유연; 장종현; 임태훈; 오인환
- Issue Date
- 216th ECS Meeting
- Various polymer electrolyte membrane fuel cell (PEMFC) startup procedures were tested to explore possible techniques for reducing performance decay and improving durability during repeated startup-shutdown cycles. The effects of applying a dummy load, which prevents cell reversal by consuming the air at the cathode, on the degradation of a membrane electrode assembly (MEA) were investigated via single cell experiments. Electrochemical techniques, including measurement of
polarization curves, electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and
linear sweep voltammetry (LSV), were employed to investigate the degradation of the PEMFCs. The
results showed that application of a dummy load during the startup procedure caused significant increase in the electrochemically active surface area (EAS) of Pt catalyst and decreases in the performance decay and charge transfer resistance (Rct), which resulted in a dramatic improvement in durability.
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