The poisoning proton pumps impact anion uptake in a way that it would decrease the uptake of anions via cotransport with protons.
Proton poisoning pumps is the contamination of both the anode and cathode sides. Durability and performance degradation of PEM fuel cells are one of the most critical challenges that are primarily associated with this technology. If proton pump function is decreased, it simply indicates that the amount of proton that goes outside the cell will also be decreased.
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