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Platinum-Monolayer Shell on AuNi0.5Fe Nanoparticle Core Electrocatalyst with High Activity and Stability for the Oxygen Reduction Reaction
Abstract
We describe a simple method for preparing multimetallic nanoparticles by in situ decomposition of the corresponding Prussian blue analogue, which is adsorbed on carbon black. The example involves the AuNi(0.5)Fe core of the Pt(ML)/Au(1)Ni(0.5)Fe core-shell electrocatalyst for the oxygen reduction reaction. The core contains 3-5 surface atomic layers of Au, which play an essential role in determining the activity and stability of the catalyst. The Pt(ML)/AuNi(0.5)Fe electrocatalyst exhibited Pt mass and specific activities of 1.38 A/mg(Pt) and 1.12 × 10(-3) A/cm(2)(Pt), respectively, both of which are several times higher than those of commercial Pt/C catalysts. Its all-noble-metal mass activity (0.18 A/mg(Pt,Au)) is higher than or comparable to those of commercial samples. Stability tests showed an insignificant loss in activity after 15,000 triangular-potential cycles. We ascribe the high activity and stability of the Pt(ML)/AuNi(0.5)Fe electrocatalyst to its hierarchical structural properties, the Pt-core interaction, and the high electrochemical stability of the gold shell that precludes exposure to the electrolyte of the relatively active inner-core materials.
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Cites
Nanoalloys: From Theory to Applications of Alloy Clusters and Nanoparticles
Ferrando, R., Jellinek, J., & Johnston, R. L. (2008) · Chemical Reviews · doi:10.1021/cr040090g · Cited by 3,690
Adsorbate‐Induced Surface Segregation for Core–Shell Nanocatalysts
Mayrhofer, K. J. J., Juhart, V., Hartl, K., Hanzlik, M., & Arenz, M. (2009) · Angewandte Chemie International Edition · doi:10.1002/anie.200806209 · Cited by 319
Cited by
Electrocatalyst approaches and challenges for automotive fuel cells
Debe, M. K. (2012) · Nature · doi:10.1038/nature11115 · Cited by 5,885
Recent Advances in Electrocatalysts for Oxygen Reduction Reaction
Shao, M., Chang, Q., Dodelet, J.-P., & Chenitz, R. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00462 · Cited by 3,903
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
Tuning Nanoparticle Catalysis for the Oxygen Reduction Reaction
Guo, S., Zhang, S., & Sun, S. (2013) · Angewandte Chemie International Edition · doi:10.1002/anie.201207186 · Cited by 994
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
Metadata
- Authors
- Gong, K., Su, D., & Adzic, R. R.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-09-28
- Volume
- 132
- Issue
- 41
- Pages
- 14364-14366
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1975269412
- Cited by
- 194
- References
- 2
- FWCI
- 9.93
- Type
- journal article
- Language
- en
- Open access
- closed
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- Gong, K., Su, D., & Adzic, R. R. (2010). Platinum-Monolayer Shell on AuNi0.5Fe Nanoparticle Core Electrocatalyst with High Activity and Stability for the Oxygen Reduction Reaction. Journal of the American Chemical Society. https://doi.org/10.1021/ja1063873
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