The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.
Solvothermal Synthesis of Platinum Alloy Nanoparticles for Oxygen Reduction Electrocatalysis
Abstract
Platinum alloy nanoparticles show great promise as electrocatalysts for the oxygen reduction reaction (ORR) in fuel cell cathodes. We report here on the use of N,N-dimethylformamide (DMF) as both solvent and reductant in the solvothermal synthesis of Pt alloy nanoparticles (NPs), with a particular focus on Pt-Ni alloys. Well-faceted alloy nanocrystals were generated with this method, including predominantly cubic and cuboctahedral nanocrystals of Pt(3)Ni, and octahedral and truncated octahedral nanocrystals of PtNi. X-ray diffraction (XRD) and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM), coupled with energy dispersive spectroscopy (EDS), were used to characterize crystallite morphology and composition. ORR activities of the alloy nanoparticles were measured with a rotating disk electrode (RDE) technique. While some Pt(3)Ni alloy nanoparticle catalysts showed specific activities greater than 1000 μA/cm(2)(Pt), alloy catalysts prepared with a nominal composition of PtNi displayed activities close to 3000 μA/cm(2)(Pt), or almost 15 times that of a state-of-the-art Pt/carbon catalyst. XRD and EDS confirmed the presence of two NP compositions in this catalyst. HAADF-STEM examination of the PtNi nanoparticle catalyst after RDE testing revealed the development of hollows in a number of the nanoparticles due to nickel dissolution. Continued voltage cycling caused further nickel dissolution and void formation, but significant activity remained even after 20,000 cycles.
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Cites
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Improved Oxygen Reduction Activity on Pt 3 Ni(111) via Increased Surface Site Availability
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Platinum Monolayer Fuel Cell Electrocatalysts
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Synthesis and Oxygen Reduction Activity of Shape-Controlled Pt3Ni Nanopolyhedra
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Synthesis of Silver Nanoprisms in DMF
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Cited by
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
Recent advancements in Pt and Pt-free catalysts for oxygen reduction reaction
Nie, Y., Li, L., & Wei, Z. (2015) · Chemical Society Reviews · doi:10.1039/c4cs00484a · Cited by 2,156
Wang, Y.-J., Zhao, N., Fang, B., Li, H., Bi, X. T., & Wang, H. (2015) · Chemical Reviews · doi:10.1021/cr500519c · Cited by 1,267
Kongkanand, A., & Mathias, M. F. (2016) · The Journal of Physical Chemistry Letters · doi:10.1021/acs.jpclett.6b00216 · Cited by 1,202
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
Metadata
- Authors
- Carpenter, M. K., Moylan, T. E., Kukreja, R. S., Atwan, M. H., & Tessema, M. M.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-05-11
- Volume
- 134
- Issue
- 20
- Pages
- 8535-8542
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2315546872
- Cited by
- 429
- References
- 29
- FWCI
- 16.76
- Type
- journal article
- Language
- en
- Open access
- closed
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