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• W3158243762 abstract "Hydrogen fuel quality is important for the successful commercialization of PEM (proton exchange membrane) fuel cell vehicles (FCVs) because impurities can adversely affect the normal operation of FCVs both immediately and during their lifetime operation. Among the impurities specified in H 2 quality standards, CO (carbon monoxide) is known to have one of the greatest impacts on fuel cells because of the immediate decrease in performance at low concentrations. CO impurity levels of only 0.2 ppm, as specified in the H 2 quality standards, were found in H 2 refueling stations with adverse impacts to PEM fuel cell operation. In this study CO impurity testing was conducted on single cells based on an extensive design of experiments (DOE) that was performed using several MEAs with two levels of anode platinum loading (0.05 mg Pt /cm 2 and 0.1 mg Pt /cm 2 ) and two different materials for platinum carbon support (Highly Graphitized Carbon and High Surface Area Carbon). Contamination testing for each MEA design configuration was performed at four different CO impurity levels (0.1 ppm, 0.2 ppm, 0.3 ppm, and 0.4 ppm) and three current densities (0.1 A/cm 2 , 1.0 A/cm 2 , and 1.7 A/cm 2 ) at each impurity level. The results indicate that the most significant factor to improve MEA tolerance to CO contamination was the choice of carbon support. The use of high surface area carbon had an even greater impact than the use of higher Pt loading, which suggests paths toward addressing CO contamination that avoid higher catalyst cost. • PEMFC anode contamination for different anode materials has not been explored. • Experimental design control factors included Pt loading, C support, and CO level. • High surface area carbon support improves anode tolerance to CO contamination. • Carbon graphitization can impact CO contamination as much as Pt loading." @default.
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• W3158243762 date "2021-06-01" @default.
• W3158243762 modified "2023-09-24" @default.
• W3158243762 title "Impact of anode catalyst loadings and carbon supports to CO contamination in PEM fuel cells" @default.
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• W3158243762 doi "https://doi.org/10.1016/j.ijhydene.2021.03.204" @default.
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