Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells
Core–shell particles with earth-abundant cores represent an effective design strategy for improving the performance of noble metal catalysts, while simultaneously reducing the content of expensive noble metals. However, the structural and catalytic stabilities of these materials often suffer during...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Springer Science and Business Media LLC
2020
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| Online Access: | https://hdl.handle.net/1721.1/128491 |
| _version_ | 1826201181764976640 |
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| author | Göhl, Daniel Garg, Aaron R. Paciok, Paul Mayrhofer, Karl J. J. Heggen, Marc Shao-Horn, Yang Dunin-Borkowski, Rafal E. Román- Leshkov, Yuriy Ledendecker, Marc |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Göhl, Daniel Garg, Aaron R. Paciok, Paul Mayrhofer, Karl J. J. Heggen, Marc Shao-Horn, Yang Dunin-Borkowski, Rafal E. Román- Leshkov, Yuriy Ledendecker, Marc |
| author_sort | Göhl, Daniel |
| collection | MIT |
| description | Core–shell particles with earth-abundant cores represent an effective design strategy for improving the performance of noble metal catalysts, while simultaneously reducing the content of expensive noble metals. However, the structural and catalytic stabilities of these materials often suffer during the harsh conditions encountered in important reactions, such as the oxygen reduction reaction (ORR). Here, we demonstrate that atomically thin Pt shells stabilize titanium tungsten carbide cores, even at highly oxidizing potentials. In situ, time-resolved experiments showed how the Pt coating protects the normally labile core against oxidation and dissolution, and detailed microscopy studies revealed the dynamics of partially and fully coated core–shell nanoparticles during potential cycling. Particles with complete Pt coverage precisely maintained their core–shell structure and atomic composition during accelerated electrochemical ageing studies consisting of over 10,000 potential cycles. The exceptional durability of fully coated materials highlights the potential of core–shell architectures using earth-abundant transition metal carbide (TMC) and nitride (TMN) cores for future catalytic applications. |
| first_indexed | 2024-09-23T11:47:48Z |
| format | Article |
| id | mit-1721.1/128491 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:47:48Z |
| publishDate | 2020 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1284912022-09-27T21:57:56Z Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells Göhl, Daniel Garg, Aaron R. Paciok, Paul Mayrhofer, Karl J. J. Heggen, Marc Shao-Horn, Yang Dunin-Borkowski, Rafal E. Román- Leshkov, Yuriy Ledendecker, Marc Massachusetts Institute of Technology. Department of Chemical Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Department of Materials Science and Engineering Core–shell particles with earth-abundant cores represent an effective design strategy for improving the performance of noble metal catalysts, while simultaneously reducing the content of expensive noble metals. However, the structural and catalytic stabilities of these materials often suffer during the harsh conditions encountered in important reactions, such as the oxygen reduction reaction (ORR). Here, we demonstrate that atomically thin Pt shells stabilize titanium tungsten carbide cores, even at highly oxidizing potentials. In situ, time-resolved experiments showed how the Pt coating protects the normally labile core against oxidation and dissolution, and detailed microscopy studies revealed the dynamics of partially and fully coated core–shell nanoparticles during potential cycling. Particles with complete Pt coverage precisely maintained their core–shell structure and atomic composition during accelerated electrochemical ageing studies consisting of over 10,000 potential cycles. The exceptional durability of fully coated materials highlights the potential of core–shell architectures using earth-abundant transition metal carbide (TMC) and nitride (TMN) cores for future catalytic applications. 2020-11-16T21:12:38Z 2020-11-16T21:12:38Z 2019-12 2018-08 2020-08-05T15:31:12Z Article http://purl.org/eprint/type/JournalArticle 1476-1122 1476-4660 https://hdl.handle.net/1721.1/128491 Göhl, Daniel et al. "Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells." Nature Materials 19, 3 (March 2020): 287–291 © 2020 The Author(s) en http://dx.doi.org/10.1038/s41563-019-0555-5 Nature Catalysis Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Springer Science and Business Media LLC Other repository |
| spellingShingle | Göhl, Daniel Garg, Aaron R. Paciok, Paul Mayrhofer, Karl J. J. Heggen, Marc Shao-Horn, Yang Dunin-Borkowski, Rafal E. Román- Leshkov, Yuriy Ledendecker, Marc Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells |
| title | Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells |
| title_full | Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells |
| title_fullStr | Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells |
| title_full_unstemmed | Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells |
| title_short | Engineering stable electrocatalysts by synergistic stabilization between carbide cores and Pt shells |
| title_sort | engineering stable electrocatalysts by synergistic stabilization between carbide cores and pt shells |
| url | https://hdl.handle.net/1721.1/128491 |
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