The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
Three-Dimensional Tracking and Visualization of Hundreds of Pt−Co Fuel Cell Nanocatalysts During Electrochemical Aging
Abstract
We present an electron tomography method that allows for the identification of hundreds of electrocatalyst nanoparticles with one-to-one correspondence before and after electrochemical aging. This method allows us to track, in three-dimensions, the trajectories and morphologies of each Pt-Co nanocatalyst on a fuel cell carbon support. In conjunction with the use of atomic-scale electron energy loss spectroscopic imaging, our experiment enables the correlation of performance degradation of the catalyst with changes in particle/interparticle morphologies, particle-support interactions, and the near-surface chemical composition. We found that aging of the catalysts under normal fuel cell operating conditions (potential scans from +0.6 to +1.0 V for 30,000 cycles) gives rise to coarsening of the nanoparticles, mainly through coalescence, which in turn leads to the loss of performance. The observed coalescence events were found to be the result of nanoparticle migration on the carbon support during potential cycling. This method provides detailed insights into how nanocatalyst degradation occurs in proton exchange membrane fuel cells (PEMFCs) and suggests that minimization of particle movement can potentially slow down the coarsening of the particles and the corresponding performance degradation.
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Cites
Improved Oxygen Reduction Activity on Pt 3 Ni(111) via Increased Surface Site Availability
Stamenkovic, V. R., Fowler, B., Mun, B. S., Wang, G., Ross, P. N., Lucas, C. A., & Marković, N. M. (2007) · Science · doi:10.1126/science.1135941 · Cited by 4,421
Trends in electrocatalysis on extended and nanoscale Pt-bimetallic alloy surfaces
Stamenkovic, V. R., Mun, B. S., Arenz, M., Mayrhofer, K. J. J., Lucas, C. A., Wang, G., Ross, P. N., & Markovic, N. M. (2007) · Nature Materials · doi:10.1038/nmat1840 · Cited by 3,252
Alloys of platinum and early transition metals as oxygen reduction electrocatalysts
Greeley, J., Stephens, I. E. L., Bondarenko, A. S., Johansson, T. P., Hansen, H. A., Jaramillo, T. F., Rossmeisl, J., Chorkendorff, I., & Nørskov, J. K. (2009) · Nature Chemistry · doi:10.1038/nchem.367 · Cited by 3,203
Chen, S., Gasteiger, H. A., Hayakawa, K., Tada, T., & Shao-Horn, Y. (2010) · Journal of The Electrochemical Society · doi:10.1149/1.3258275 · Cited by 360
Cited by
Understanding heterogeneous electrocatalytic carbon dioxide reduction through operando techniques
Handoko, A. D., Wei, F., Jenndy, Yeo, B. S., & Seh, Z. W. (2018) · Nature Catalysis · doi:10.1038/s41929-018-0182-6 · Cited by 728
Design criteria for stable Pt/C fuel cell catalysts
Meier, J. C., Galeano, C., Katsounaros, I., Witte, J., Bongard, H. J., Topalov, A. A., Baldizzone, C., Mezzavilla, S., Schüth, F., & Mayrhofer, K. J. J. (2014) · Beilstein Journal of Nanotechnology · doi:10.3762/bjnano.5.5 · Cited by 559
Electrocatalysis in Alkaline Media and Alkaline Membrane-Based Energy Technologies
Yang, Y., Peltier, C. R., Zeng, R., Schimmenti, R., Li, Q., Huang, X., Yan, Z., Potsi, G., Selhorst, R., Lu, X., et al. (2022) · Chemical Reviews · doi:10.1021/acs.chemrev.1c00331 · Cited by 544
Self-citationElectrochemistry of Nanoparticles
Kleijn, S. E. F., Lai, S. C. S., Koper, M. T. M., & Unwin, P. R. (2014) · Angewandte Chemie International Edition · doi:10.1002/anie.201306828 · Cited by 398
Gan, L., Heggen, M., O’Malley, R., Theobald, B., & Strasser, P. (2013) · Nano Letters · doi:10.1021/nl304488q · Cited by 295
Metadata
- Authors
- Yu, Y., Xin, H. L., Hovden, R., Wang, D., Rus, E. D., Mundy, J. A., Muller, D. A., & Abruña, H. D.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-01-12
- Volume
- 12
- Issue
- 9
- Pages
- 4417-4423
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W1991520310
- Cited by
- 175
- References
- 4
- FWCI
- 10.92
- Type
- journal article
- Language
- en
- Open access
- closed
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