Photo by campaign_creators from unsplash
For efficient conversion in hydrogen fuel cells, the interaction of oxygen with the catalyst is important. The interfacial chemistry of the nanoparticles (NPs) at the nanometre scale is crucial to… Click to show full abstract
For efficient conversion in hydrogen fuel cells, the interaction of oxygen with the catalyst is important. The interfacial chemistry of the nanoparticles (NPs) at the nanometre scale is crucial to truly understand the oxygen reduction reaction (ORR), the limiting step of catalytic activity in Pt catalysts [1]. In order to achieve this, the characterisation techniques of aberration-corrected Scanning Transmission Electron Microscopy (STEM) and Electron Energy Loss Spectroscopy (EELS) are employed. Using spectrum imaging, a combination of elemental maps and spectra can be used to investigate the bonding and location of the oxygen atoms towards the surface of catalyst nanoparticles.
Journal Title: Microscopy and Microanalysis
Year Published: 2019
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!