Understanding the Platinum-Rare Earth Nanoalloys Fine Surface Structure Dynamics during Operating Electrochemical Environment

The use of high energy X-ray diffraction is proposed to investigate operando the fine structure-activity-stability trends of carbon-supported platinum-rare earth (Pt-RE/C) nanoalloys during the electrochemical conditions of the oxygen reduction reaction (ORR). The proposal is based on the study of representative Pt-RE/C nanocatalysts at different key steps of their ‘life’, i.e. from their early electrochemical activation to their long-term stability over accelerated stress tests.