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First hexagonal close packed high-entropy alloy with outstanding stability under extreme conditions and electrocatalytic activity for methanol oxidation
Kirill Yusenko,
Sephira Riva,
Patricia A. Carvalho,
Maria V. Yusenko,
Serena Arnaboldi,
Aleksandr S. Sukhikh,
Michael Hanfland,
Sergey A. Gromilov
Scripta Materialia, Volume: 138, Pages: 22 - 27
Swansea University Author: Kirill Yusenko
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DOI (Published version): 10.1016/j.scriptamat.2017.05.022
Abstract
High-entropy alloys containing 5 and 6 platinum group metals have been prepared by thermal decomposition of single-source precursors non requiring high temperature or mechanical alloying. The prepared Ir0.19Os0.22Re0.21Rh0.20Ru0.19 alloy is the first example of a single-phase hexagonal high-entropy...
| Published in: | Scripta Materialia |
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| ISSN: | 1359-6462 |
| Published: |
2017
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa33919 |
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| Abstract: |
High-entropy alloys containing 5 and 6 platinum group metals have been prepared by thermal decomposition of single-source precursors non requiring high temperature or mechanical alloying. The prepared Ir0.19Os0.22Re0.21Rh0.20Ru0.19 alloy is the first example of a single-phase hexagonal high-entropy alloy. Heat treatment up to 1500 K and compression up to 45 GPa do not result in phase changes, a record temperature and pressure stability for a single-phase high-entropy alloy. The alloys show pronounced electrocatalytic activity in methanol oxidation, which opens a route for the use of high-entropy alloys as materials for sustainable energy conversion. |
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| Keywords: |
High-entropy alloys; X-ray diffraction; Platinum group alloys; Electrochemistry |
| College: |
Faculty of Science and Engineering |
| Start Page: |
22 |
| End Page: |
27 |