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241129s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202409575
|2 doi
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|a pubmed24n1617.xml
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|a (DE-627)NLM380964694
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|a (NLM)39610159
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|a DE-627
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|a eng
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|a Wang, Meiling
|e verfasserin
|4 aut
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|a Ultrafast H-Spillover in Intermetallic PtZn Induced by the Local Disorder for Excellent Electrocatalytic Hydrogen Evolution Performance
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|c 2024
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|a Text
|b txt
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 29.11.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © 2024 Wiley‐VCH GmbH.
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|a Ordered intermetallic Platinum-Zinc (PtZn) shows potential in hydrogen evolution reaction (HER), but faces a huge challenge in activity enhancement due to the H-repulsion properties of Zinc (Zn). Here, local disorder in ordered intermetallic PtZn nanoparticles confined in N-doped porous carbon (I-PtZnNPC) via a confinement-high-temperature pyrolysis strategy is realized to boost the HER performance. Experiments and calculations demonstrate that the local substitution of Pt atoms for Zn atoms creates an ultra-short H-spillover channel (Pt site→Pt-Zn bridge site →Zn site). Benefiting from such an ultra-fast H-migration from Pt site to Zn site, I-PtZn@NPC exhibits enhanced intrinsic activity with an ultralow overpotential (η10: 2.3 mV, η100: 24 mV) than commercial Pt black catalyst. Furthermore, a 25 cm2 commercial proton exchange membrane (PEM) electrolyzer equipped with I-PtZn@NPC achieved stable operation at 1.60 Vcell for 200 h at a current density of 1 A cm⁻2. This design of local Zn disorder in the ordered intermetallic PtZn sheds new light on the rational development of efficient Zn-based alloy HER electrocatalysts
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|a Journal Article
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|a electrocatalytic hydrogen evolution
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|a intermetallic PtZn
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|a local disorder
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|a ultrafast H‐spillover
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|a Shi, Zhengju
|e verfasserin
|4 aut
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|a Shi, Wenwen
|e verfasserin
|4 aut
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|a Jiang, Jingyun
|e verfasserin
|4 aut
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|a Lan, Jianhong
|e verfasserin
|4 aut
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|a Li, Ruizhen
|e verfasserin
|4 aut
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|a Yan, Yuanyuan
|e verfasserin
|4 aut
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|a Liu, Zhenyu
|e verfasserin
|4 aut
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|a Fu, Longyi
|e verfasserin
|4 aut
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|a Liu, Xuguang
|e verfasserin
|4 aut
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|a Sang, Shengbo
|e verfasserin
|4 aut
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|a Hu, Yingjie
|e verfasserin
|4 aut
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|a Zhou, Jiadong
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g (2024) vom: 28. Nov., Seite e2409575
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g year:2024
|g day:28
|g month:11
|g pages:e2409575
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|u http://dx.doi.org/10.1002/adma.202409575
|3 Volltext
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|j 2024
|b 28
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|h e2409575
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