The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.
Pt–Co@Pt Octahedral Nanocrystals: Enhancing Their Activity and Durability toward Oxygen Reduction with an Intermetallic Core and an Ultrathin Shell
Abstract
Despite extensive efforts devoted to the synthesis of Pt–Co bimetallic nanocrystals for fuel cell and related applications, it remains a challenge to simultaneously control atomic arrangements in the bulk and on the surface. Here we report a synthesis of Pt–Co@Pt octahedral nanocrystals that feature an intermetallic, face-centered tetragonal Pt–Co core and an ultrathin Pt shell, together with the dominance of {111} facets on the surface. When evaluated as a catalyst toward the oxygen reduction reaction (ORR), the nanocrystals delivered a mass activity of 2.82 A mg –1 and a specific activity of 9.16 mA cm –2, which were enhanced by 13.4 and 29.5 times, respectively, relative to the values of a commercial Pt/C catalyst. More significantly, the mass activity of the nanocrystals only dropped 21% after undergoing 30 000 cycles of accelerated durability test, promising an outstanding catalyst with optimal performance for ORR and related reactions.
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Cites
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Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces
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Small molecule-assisted synthesis of carbon supported platinum intermetallic fuel cell catalysts
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Pt Atomic Layers Boosted Hydrogen Evolution Reaction in Nonacidic Media
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Metadata
- Authors
- Xie, M., Lyu, Z., Chen, R., Shen, M., Cao, Z., & Xia, Y.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2021-05-27
- Volume
- 143
- Issue
- 22
- Pages
- 8509-8518
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W3165585072
- Cited by
- 249
- References
- 14
- FWCI
- 7.75
- Type
- journal article
- Language
- en
- Open access
- closed
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- Xie, M., Lyu, Z., Chen, R., Shen, M., Cao, Z., & Xia, Y. (2021). Pt–Co@Pt Octahedral Nanocrystals: Enhancing Their Activity and Durability toward Oxygen Reduction with an Intermetallic Core and an Ultrathin Shell. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.1c04160
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