Linking morphology with activity through the lifetime of pretreated PtNi nanostructured thin film catalysts
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. Grenoble Alpes, Grenoble (France); CEA, INAC-SP2M, Grenoble (France)
- 3M Company, St. Paul, MN (United States)
- Univ. Grenoble Alpes, Grenoble (France); CEA, LITEN, Grenoble (France)
In this study, the nanoscale morphology of highly active Pt3Ni7 nanostructured thin film fuel cell catalysts is linked with catalyst surface area and activity following catalyst pretreatments, conditioning and potential cycling. The significant role of fuel cell conditioning on the structure and composition of these extended surface catalysts is demonstrated by high resolution imaging, elemental mapping and tomography. The dissolution of Ni during fuel cell conditioning leads to highly complex, porous structures which were visualized in 3D by electron tomography. Quantification of the rendered surfaces following catalyst pretreatment, conditioning, and cycling shows the important role pore structure plays in surface area, activity, and durability.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1244180
- Journal Information:
- Journal of Materials Chemistry. A, Vol. 3, Issue 21; ISSN 2050-7488
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Highly stable Pt 3 Ni nanowires tailored with trace Au for the oxygen reduction reaction
|
journal | January 2019 |
Screening Bifunctional Pt Based NSTF Catalysts for Durability with the Rotating Disk Electrode: The Effect of Ir and Ru
|
journal | January 2018 |
Similar Records
In Situ X-ray Absorption Spectroscopy of PtNi-Nanowire/Vulcan XC-72R under Oxygen Reduction Reaction in Alkaline Media
Highly Robust Low-PGM MEAs Based upon Composite Supports _ Final Report