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The effect of nitrogen oxides in air on the performance of proton exchange membrane fuel cell |
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| Authors: | Daijun Yang Lin Xu Haijiang Wang |
| Affiliation: | a School of Resource & Environmental Engineering, ECUST, Shanghai 200237, PR China b Institute for Hydrogen Technologies, School of Automotive Studies, Tongji University, 4800 Cao’an Rd., Shanghai 201804, PR China c Shanghai Fuel Cell Vehicle Powertrain Co., Ltd., Shanghai 201804, PR China d Institute For Fuel Cell Innovation, National Research Council Canada, 3250 East Mall, Vancouver, BC, Canada V6T 1W5 |
| Abstract: | The effects of NOx on the performance of proton exchange membrane (PEM) fuel cell were investigated through the introduction of a mixture containing NO and NO2, in a ratio of 9:1, into the cathode stream of a single PEM fuel cell. The NOx concentrations used in the experiments were 1480 ppm, 140 ppm and 10 ppm, which cover a range of three orders. The experimental results obtained from the tests of durability, polarization, reversibility and electrochemical impedance spectroscopy (EIS) showed a detrimental effect of NOx on the cell performance. The electrochemical measurements results suggested that the impacts of NOx are mainly resulted from the superposition of the oxygen reduction reaction (ORR), NO and HNO2 oxidation reactions, and the increased cathodic impedance. Complete recovery of the cell performance was reached after operating the cell with clean air and then purging with N2 for hours. |
| Keywords: | Nitrogen oxides PEM fuel cell Cathode Poisoning effect EIS |
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