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Investigation of a number of binary systems based on platinum and palladium and synthesized on carbon black XC72 as catalysts in the reaction of electrooxidation of hydrogen and hydrogen poisoned by carbon monoxide is carried out with use made of a complex of electrochemical methods. Exchange currents of the hydrogen reaction are determined as calculated per metal weight and its surface area. The developed methods of synthesis of binary systems are shown to make it possible to produce catalysts whose activity in the reaction of electrooxidation of hydrogen is commensurate with the activity of a platinum catalyst. The maximum tolerance with respect to carbon monoxide impurities among the binary systems investigated is found to be exhibited by PtMo and PdAu. The activity of an anode based on platinum in a model fuel cell with a solid polymer electrolyte drops by 2 and 7 times in the presence of 30 and 150 ppm CO, while the observed decrease in the current for system PtMo is equal to 10 and 50%, respectively.