In situ electrochemical AFM monitoring of the potential-dependent deterioration of platinum catalyst during potentiodynamic cycling
A platinum catalyst undergoes complex deterioration process during its operation as a
cathode in a proton exchange membrane fuel cell. By using in situ electrochemical atomic
force microscopy (EC-AFM) with super-sharp probes, we quantitatively describe the
roughening of platinum thin films during electrochemical cycling to different upper potentials,
which simulate critical operation regimes of the proton exchange membrane fuel cell. The
comprehensive quantitative analysis of morphology changes obtained using common …
cathode in a proton exchange membrane fuel cell. By using in situ electrochemical atomic
force microscopy (EC-AFM) with super-sharp probes, we quantitatively describe the
roughening of platinum thin films during electrochemical cycling to different upper potentials,
which simulate critical operation regimes of the proton exchange membrane fuel cell. The
comprehensive quantitative analysis of morphology changes obtained using common …
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