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240427s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202402391
|2 doi
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|a pubmed24n1468.xml
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|a (DE-627)NLM371584329
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|a (NLM)38669588
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|a DE-627
|b ger
|c DE-627
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|a eng
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|a Wang, Yaoxing
|e verfasserin
|4 aut
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|a Self-Encapsulation of High-Entropy Alloy Nanoparticles inside Carbonized Wood for Highly Durable Electrocatalysis
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 12.07.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a High-entropy alloy nanoparticles (HEAs) show great potential in emerging electrocatalysis due to their combination and optimization of multiple elements. However, synthesized HEAs often exhibit a weak interface with the conductive substrate, hindering their applications in long-term catalysis and energy conversion. Herein, a highly active and durable electrocatalyst composed of quinary HEAs (PtNiCoFeCu) encapsulated inside the activated carbonized wood (ACW) is reported. The self-encapsulation of HEAs is achieved during Joule heating synthesis (2060 K, 2 s) where HEAs naturally nucleate at the defect sites. In the meantime, HEAs catalyze the deposition of mobile carbon atoms to form a protective few-layer carbon shell during the rapid quenching process, thus remarkably strengthening the interface stability between HEAs and ACW. As a result, the HEAsACW shows not only favorable activity with an overpotential of 7 mV at 10 mA cm-2 for hydrogen evolution but also negligible attenuation during a 500 h stability test, which is superior to most reported electrocatalysts. The design of self-encapsulated HEAs inside ACW provides a critical strategy to enhance both activity and stability, which is also applicable to many other energy conversion technologies
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|a Journal Article
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|a carbonized wood
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|a defect engineering
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|a durable catalysts
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|a high‐entropy alloy nanoparticles
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|a hydrogen evolution reaction
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|a Zhang, Yang
|e verfasserin
|4 aut
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|a Xing, Pengyu
|e verfasserin
|4 aut
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1 |
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|a Li, Xueqi
|e verfasserin
|4 aut
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1 |
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|a Du, Qiuyu
|e verfasserin
|4 aut
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1 |
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|a Fan, Xueqin
|e verfasserin
|4 aut
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1 |
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|a Cai, Zhibin
|e verfasserin
|4 aut
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|a Yin, Ran
|e verfasserin
|4 aut
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1 |
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|a Yao, Yonggang
|e verfasserin
|4 aut
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| 700 |
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|a Gan, Wentao
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 28 vom: 02. Juli, Seite e2402391
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:36
|g year:2024
|g number:28
|g day:02
|g month:07
|g pages:e2402391
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|u http://dx.doi.org/10.1002/adma.202402391
|3 Volltext
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