Linking morphology with activity through the lifetime of pretreated PtNi nanostructured thin film catalysts

Cullen, David A.; Lopez-Haro, Miguel; Bayle-Guillemaud, Pascale; Debe, Mark; Steinbach, Andrew J.; Guetaz, L.

doi:10.1039/C5TA01854D

Title: Linking morphology with activity through the lifetime of pretreated PtNi nanostructured thin film catalysts

Journal Article · Fri Apr 10 00:00:00 EDT 2015 · Journal of Materials Chemistry. A

DOI:https://doi.org/10.1039/C5TA01854D· OSTI ID:1244180

Cullen, David A. ^[1]; Lopez-Haro, Miguel ^[2]; Bayle-Guillemaud, Pascale ^[2]; Debe, Mark ^[3]; Steinbach, Andrew J. ^[3]; Guetaz, L. ^[4]

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.

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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

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Cited by: 25 works

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Screening Bifunctional Pt Based NSTF Catalysts for Durability with the Rotating Disk Electrode: The Effect of Ir and Ru Crowtz, T. C.; Dahn, J. R. Journal of The Electrochemical Society, Vol. 165, Issue 10 https://doi.org/10.1149/2.0891810jes	journal	January 2018

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