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

Abstract

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.

Authors:
 [1];  [2];  [2];  [3];  [3];  [4]
+ Show Author Affiliations
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. Grenoble Alpes, Grenoble (France); CEA, INAC-SP2M, Grenoble (France)
  3. 3M Company, St. Paul, MN (United States)
  4. Univ. Grenoble Alpes, Grenoble (France); CEA, LITEN, Grenoble (France)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1244180
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Materials Chemistry. A
Additional Journal Information:
Journal Volume: 3; Journal Issue: 21; Journal ID: ISSN 2050-7488
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 30 DIRECT ENERGY CONVERSION

Citation Formats

Cullen, David A., Lopez-Haro, Miguel, Bayle-Guillemaud, Pascale, Debe, Mark, Steinbach, Andrew J., and Guetaz, L. Linking morphology with activity through the lifetime of pretreated PtNi nanostructured thin film catalysts. United States: N. p., 2015. Web. doi:10.1039/C5TA01854D.
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Cullen, David A., Lopez-Haro, Miguel, Bayle-Guillemaud, Pascale, Debe, Mark, Steinbach, Andrew J., & Guetaz, L. Linking morphology with activity through the lifetime of pretreated PtNi nanostructured thin film catalysts. United States. https://doi.org/10.1039/C5TA01854D
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Cullen, David A., Lopez-Haro, Miguel, Bayle-Guillemaud, Pascale, Debe, Mark, Steinbach, Andrew J., and Guetaz, L. Fri . "Linking morphology with activity through the lifetime of pretreated PtNi nanostructured thin film catalysts". United States. https://doi.org/10.1039/C5TA01854D. https://www.osti.gov/servlets/purl/1244180.
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@article{osti_1244180,
title = {Linking morphology with activity through the lifetime of pretreated PtNi nanostructured thin film catalysts},
author = {Cullen, David A. and Lopez-Haro, Miguel and Bayle-Guillemaud, Pascale and Debe, Mark and Steinbach, Andrew J. and Guetaz, L.},
abstractNote = {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.},
doi = {10.1039/C5TA01854D},
journal = {Journal of Materials Chemistry. A},
number = 21,
volume = 3,
place = {United States},
year = {Fri Apr 10 00:00:00 EDT 2015},
month = {Fri Apr 10 00:00:00 EDT 2015}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1039/C5TA01854D
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    Highly stable Pt 3 Ni nanowires tailored with trace Au for the oxygen reduction reaction
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    Screening Bifunctional Pt Based NSTF Catalysts for Durability with the Rotating Disk Electrode: The Effect of Ir and Ru
    journal, January 2018

    • Crowtz, T. C.; Dahn, J. R.
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    • DOI: 10.1149/2.0891810jes
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