The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.
Dealloyed Pt−Cu Core−Shell Nanoparticle Electrocatalysts for Use in PEM Fuel Cell Cathodes
Abstract
We report the synthesis, characterization, and single fuel cell testing of a novel class of nanostructured Pt−Cu alloy particle materials for use as oxygen reduction electrocatalyst in polymer electrolyte membrane fuel cells. The active phase of the Pt alloy nanoparticle catalysts is prepared by electrochemical dissolution (voltammetric dealloying) of Cu surface atoms from Cu-rich Pt−Cu alloy precursors. Bulk and surface structural and compositional characterization suggests that the dealloyed active catalyst phase consists of a core−shell structure in which a multilayer Pt rich shell is surrounding a Pt-poor alloy particle core. The electrocatalytic Pt mass activity of the dealloyed core−shell particles for the oxygen reduction reaction (ORR) exceeds that of state-of-the art Pt electrocatalyst by more than a factor of 4 and thus meets performance targets for fuel cell cathodes [Gasteiger, H. A.; Kocha, S. S.; Sompalli, B.; Wagner, F. T. Appl. Catal. B: Environ. 2005, 56, 9−35]. 1 It is hypothesized that a reduced Pt−Pt distance near the particle surface, stabilized by the lattice-contracted alloy core, may explain the modification of the surface catalytic reactivity. Dealloying of base-metal-rich noble metal alloy precursors is proposed as a more general strategy toward modifying the surface catalytic properties of noble metal surfaces.
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Cites
Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode
Nørskov, J. K., Rossmeisl, J., Logadottir, A., Lindqvist, L., Kitchin, J. R., Bligaard, T., & Jónsson, H. (2004) · The Journal of Physical Chemistry B · doi:10.1021/jp047349j · Cited by 13,153
Gasteiger, H. A., Kocha, S. S., Sompalli, B., & Wagner, F. T. (2005) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2004.06.021 · Cited by 4,876
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
Zhang, J., Vukmirovic, M. B., Xu, Y., Mavrikakis, M., & Adzic, R. R. (2005) · Angewandte Chemie International Edition · doi:10.1002/anie.200462335 · Cited by 1,106
Oxygen Reduction on Carbon-Supported Pt−Ni and Pt−Co Alloy Catalysts
Paulus, U. A., Wokaun, A., Scherer, G. G., Schmidt, T. J., Stamenkovic, V., Radmilovic, V., Markovic, N. M., & Ross, P. N. (2002) · The Journal of Physical Chemistry B · doi:10.1021/jp013442l · Cited by 954
Koh, S., & Strasser, P. (2007) · Journal of the American Chemical Society · doi:10.1021/ja0742784 · Cited by 783
Self-citationImportance of Interatomic Spacing in Catalytic Reduction of Oxygen in Phosphoric Acid
Jalan, V., & Taylor, E. J. (1983) · Journal of The Electrochemical Society · doi:10.1149/1.2119574 · Cited by 363
Cited by
Combining theory and experiment in electrocatalysis: Insights into materials design
Seh, Z. W., Kibsgaard, J., Dickens, C. F., Chorkendorff, I., Nørskov, J. K., & Jaramillo, T. F. (2017) · Science · doi:10.1126/science.aad4998 · Cited by 12,114
Lattice-strain control of the activity in dealloyed core–shell fuel cell catalysts
Strasser, P., Koh, S., Anniyev, T., Greeley, J., More, K., Yu, C., Liu, Z., Kaya, S., Nordlund, D., Ogasawara, H., et al. (2010) · Nature Chemistry · doi:10.1038/nchem.623 · Cited by 2,984
Self-citationMetal-Free Catalysts for Oxygen Reduction Reaction
Dai, L., Xue, Y., Qu, L., Choi, H.-J., & Baek, J.-B. (2015) · Chemical Reviews · doi:10.1021/cr5003563 · Cited by 2,380
Wang, D., Xin, H. L., Hovden, R., Wang, H., Yu, Y., Muller, D. A., DiSalvo, F. J., & Abruña, H. D. (2013) · Nature Materials · doi:10.1038/nmat3458 · Cited by 2,082
Carbon as catalyst and support for electrochemical energy conversion
Trogadas, P., Fuller, T. F., & Strasser, P. (2014) · Carbon · doi:10.1016/j.carbon.2014.04.005 · Cited by 522
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Metadata
- Authors
- Mani, P., Srivastava, R., & Strasser, P.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-01-26
- Volume
- 112
- Issue
- 7
- Pages
- 2770-2778
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2053733819
- Cited by
- 457
- References
- 8
- FWCI
- 17.54
- Type
- journal article
- Language
- en
- Open access
- closed
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