Reformate gas composition and pressure effect on CO tolerant Pt/Ti0.8Mo0.2O2–C electrocatalyst for PEM fuel cells
نویسندگان
چکیده
Mixed-oxide coated Ti0.8Mo0.2O2–C composite supported 20 wt% Pt electrocatalysts with Ti0.8Mo0.2O2/C=75/25 mass ratio were developed for CO tolerance of polymer electrolyte membrane fuel cell (PEMFC) anode. Studies the structure, composition and stability, as well results COads stripping confirmed that mixed oxide support electrocatalyst prepared this study show well-documented characteristics Pt/Ti1-xMoxO2-C systems enhanced compared to Pt/C catalyst. Dilution hydrogen CO2 CH4 had negligible negative impact on performance. Switching gas between reformate shows recovery potential after poisoning. Nevertheless, anode catalyst loading 0.25 0.5 mgPt/cm2 was not enough give reasonable performance when impurity present. Loading 0.85 effective 1000 mA/cm2 current density at 0.6 V under 25 ppm 30 psig. Higher needed transfer limited region overcome However, loadings higher than caused limitations. Hence is proposed 40 Pt/Ti0.8Mo0.2O2–C
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ژورنال
عنوان ژورنال: International Journal of Hydrogen Energy
سال: 2021
ISSN: ['0360-3199', '1879-3487']
DOI: https://doi.org/10.1016/j.ijhydene.2020.08.226