Tuesday publication post! 📖 Palladium@platinum core-shell nanoparticles are highly active in the oxygen reduction reaction during electrocatalysis. However, the nanoparticles also tend to corrode overtime, deactivating the catalysts. In this newest publication the Poseidon AX system was used to look at the corrosion behavior of Pd@Pt nanoparticles!
What did they find?
💧 Twin boundaries act as the first sites of Pd dissolution, accelerating corrosion compared to octahedral particles
🔬 High-strain regions and defect agglomeration further drive degradation
📈 Once twin-boundary corrosion ends, high-curvature paths dominate the process
By visualizing corrosion dynamics as they happen, in situ microscopy can help design more robust catalysts for future ORR reactions.
Want to read the entire work? Find it here!
https://pubs.acs.org/doi/10.1021/acs.jpcc.5c00932
