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Accumulation Behavior of Impurities in Hydrogen Circulation System of Fuel Cells
Published May 21, 2008 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Spring Meeting
In this study, the accumulation behaviors of impurities were investigated in the hydrogen circulation system of fuel cells. It was found that helium and nitrogen was accumulated, which were influenced by gas permeation. Carbon monoxide (CO), hydrogen sulfide (H2S) and ammonia (NH3) were not accumulated. It was found that the accumulation of impurities was suppressed by gas permeability, adsorptive property, solubility, or conversion into other materials. It will be necessary to reflect the findings on the accumulation behaviors of various impurities into the ISO hydrogen quality standard for fuel cell vehicles.