Tuesday publication post! In this publication in #ScienceAdvances, the authors used the #FusionAX system to observe fuel cell atomic ordering! They developed a novel surface engineering strategy to enhance the durability of platinum-iron (Pt-Fe) nanowire catalysts in fuel cells.
Using in situ annealing, the authors looked at the growth of surface intermetallic PtFe nanowires at increased temperature conditions. This lead to observing optimal annealing conditions for preserving the shape while inducing surface atomic ordering in 1D PtFe nanowires.
The authors saw that the catalysts displayed 50% reduced Fe loss under membrane electrode assemblies (MEA) conditions while preserving catalytic activity akin to that in half-cells.
Density functional theory calculations reveal that the ordered intermetallic surface not only enhances ORR activity but also stabilizes the morphology, mitigating rapid corrosion.
This study shows that shape and size control in 1D nanowire materials can be controlled and observed using in situ electron microscopy.
Want to read the entire paper?
Find it here!
https://www.doi.org/10.1126/sciadv.ado4935
#Protochips #InSituMicroscopy #FindYourBreakthrough
