The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Kirkendall Effect and Lattice Contraction in Nanocatalysts: A New Strategy to Enhance Sustainable Activity
Abstract
Core-shell nanoparticles increasingly are found to be effective in enhancing catalytic performance through the favorable influence of the core materials on the active components at the surface. Yet, sustaining high activities under operating conditions often has proven challenging. Here we explain how differences in the components' diffusivity affect the formation and stability of the core-shell and hollow nanostructures, which we ascribe to the Kirkendall effect. Using Ni nanoparticles as the templates, we fabricated compact and smooth Pt hollow nanocrystals that exhibit a sustained enhancement in Pt mass activity for oxygen reduction in acid fuel cells. This is achieved by the hollow-induced lattice contraction, high surface area per mass, and oxidation-resistant surface morphology--a new route for enhancing both the catalysts' activity and durability. The results indicate challenges and opportunities brought by the nanoscale Kirkendall effect for designing, at the atomic level, nanostructures with a wide range of novel properties.
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Cites
Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode
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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
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
Synthesis and Oxygen Reduction Activity of Shape-Controlled Pt3Ni Nanopolyhedra
Zhang, J., Yang, H., Fang, J., & Zou, S. (2010) · Nano Letters · doi:10.1021/nl903717z · Cited by 788
Wang, J. X., Inada, H., Wu, L., Zhu, Y., Choi, Y., Liu, P., Zhou, W.-P., & Adzic, R. R. (2009) · Journal of the American Chemical Society · doi:10.1021/ja9067645 · Cited by 719
Self-citationChen, 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
Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces
Chen, C., Kang, Y., Huo, Z., Zhu, Z., Huang, W., Xin, H. L., Snyder, J. D., Li, D., Herron, J. A., Mavrikakis, M., et al. (2014) · Science · doi:10.1126/science.1249061 · Cited by 2,765
Peck, M. A., & Langell, M. A. (2012) · Chemistry of Materials · doi:10.1021/cm300739y · Cited by 834
Synthesis and catalytic properties of bimetallic nanomaterials with various architectures
Liu, X., Wang, D., & Li, Y. (2012) · Nano Today · doi:10.1016/j.nantod.2012.08.003 · Cited by 538
Hong, J. W., Kang, S. W., Choi, B.-S., Kim, D., Lee, S. B., & Han, S. W. (2012) · ACS Nano · doi:10.1021/nn2046828 · Cited by 367
Pt-based nanoarchitecture and catalyst design for fuel cell applications
Jung, N., Chung, D. Y., Ryu, J., Yoo, S. J., & Sung, Y.-E. (2014) · Nano Today · doi:10.1016/j.nantod.2014.06.006 · Cited by 324
Metadata
- Authors
- Wang, J. X., Ma, C., Choi, Y., Su, D., Zhu, Y., Liu, P., Si, R., Vukmirovic, M. B., Zhang, Y., & Adzic, R. R.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-08-10
- Volume
- 133
- Issue
- 34
- Pages
- 13551-13557
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1990348970
- Cited by
- 270
- References
- 7
- FWCI
- 12.22
- Type
- journal article
- Language
- en
- Open access
- closed
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