Tuesday publication post! 📖 Designing Pt alloy nanoparticles (NPs) that are both highly active and durable is important to advance fuel cell technology. However, achieving small, uniform, and stable particles without them sintering during reactions is a challenge. The authors from @KIER used the Fusion AX system to follow the solid-state synthesis of PtNi alloy nanoparticles.
What were the authors able to do?
🔬Dynamic tracking of carbon shell formation through atomic-scale imaging and diffraction analysis.
🔥Observation that carbon incorporation occurs during Pt lattice expansion at elevated temperatures, followed by carbon segregation and shell reconstruction during cooling.
📈Direct correlation between these structural transformations and enhanced electrochemical durability of the alloy nanoparticles.
This work demonstrates how Fusion AX enables mechanistic insight into nanoparticle formation under operational conditions, increasing understanding in catalyst design through real-time in situ observation.
Want to read the entire work? Find it here!
https://linkinghub.elsevier.com/retrieve/pii/S0378775325016234
