Platinum-yttrium alloy nanoparticles show both a high activity and stability for the oxygen reduction reaction. The catalysts were prepared by magnetron sputter aggregation and mass filtration providing a model catalyst system with a narrow size distribution. The structure and stability of nanostructured Pt-Y alloy catalysts were studied using transmission electron microscopy techniques. Using elemental X-ray mapping and high-resolution electron microscopy, the specific compositional structure and distribution of the individual nanoparticles was unraveled and the stability assessed. Studying the catalyst after reaction and after aging tests shows the development of a core-shell type structure after being exposed to reaction conditions.
|Journal||E C S Transactions|
|Publication status||Published - 2015|
|Event||227th ECS Meeting - Chicago, IL, United States|
Duration: 24 May 2015 → 28 May 2015
|Conference||227th ECS Meeting|
|Period||24/05/2015 → 28/05/2015|
- Oxygen Electrodes II - May 26 2015 8:00AM