Time-Dependent Modeling of Performance Degradation for PEMFC Single Cell System to Evaluate the Cell Performance and Durability: Effects of CO Poisoning

There have been great attentions on polymer electrolyte membrane fuel cell (PEMFC) due to their advantageous characteristics such as zero emission of hazardous pollutant and high energy density. In this work, we evaluated degradation phenomena and stability of single cell performance via one dimensional single cell modeling. Here, CO poisoning on anode on anode was considered for cell performance degradation. Modeling results showed that the performance and stability were highly degraded with CO concentration in fuel gas. In addition, cell performance was reduced by slow oxygen reduction on cathode in long term operation. In order to overcome, it is required to increase ratio of hydrogen in the fuel gas of anode and high Pt loading contained in the cathodic catalyst layer.

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