Influence of Composition and Structure of Pt-Based Electrocatalysts on Their Durability in Different Conditions of Stress-Test

StabilityStability in the course of exploitation and catalytic activity in reactions, taking place on the electrodes, are the most important characteristics of electrocatalystsElectrocatalysts that determine their application in fuel cells. Relationship of the electrochemical behavior of Pt/CPt/C and PtCu/C catalystsCatalysts with their morphology is studied in this chapter. In according with results of our study, Pt(Cu)/CPt(Cu)/C materials with core-shellCore-shell architecture of two-component nanoparticles can be a promising direction in electrocatalysis. Such materials can exhibit high specific characteristics, while being characterized by a reduced content of platinum and a low percentage of d-metal dissolution. The resulting Pt/CPt/C catalysts are characterized by surface area values from 11 to 80 m2/g(Pt), average crystallite size from 1.1 to 5.7 nm, mass fraction of platinum from 18 to 39% and relative stabilityStability during long-term stress testingStress testing of more than 70%, which is comparable to or exceeds this value for the commercial catalyst JM20.