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231226s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202305685
|2 doi
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|a pubmed24n1277.xml
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|a (DE-627)NLM362435936
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|a (NLM)37747155
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Li, Dongyang
|e verfasserin
|4 aut
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| 245 |
1 |
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|a In Situ Regulating Cobalt/Iron Oxide-Oxyhydroxide Exchange by Dynamic Iron Incorporation for Robust Oxygen Evolution at Large Current Density
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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
|b cr
|2 rdacarrier
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|a Date Revised 01.02.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Wiley-VCH GmbH.
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|a The key dilemma for green hydrogen production via electrocatalytic water splitting is the high overpotential required for anodic oxygen evolution reaction (OER). Co/Fe-based materials show superior catalytic OER activity to noble metal-based catalysts, but still lag far behind the state-of-the-art Ni/Fe-based catalysts probably due to undesirable side segregation of FeOOH with poor conductivity and unsatisfied structural durability under large current density. Here, a robust and durable OER catalyst affording current densities of 500 and 1000 mA cm-2 at extremely low overpotentials of 290 and 304 mV in base is reported. This catalyst evolves from amorphous bimetallic FeOOH/Co(OH)2 heterostructure microsheet arrays fabricated by a facile mechanical stirring strategy. Especially, in situ X-ray photoelectron spectroscopy (XPS) and Raman analysis decipher the rapid reconstruction of FeOOH/Co(OH)2 into dynamically stable Co1-x Fex OOH active phase through in situ iron incorporation into CoOOH, which perform as the real active sites accelerating the rate-determining step supported by density functional theory calculations. By coupling with MoNi4 /MoO2 cathode, the self-assembled alkaline electrolyzer can deliver 500 mA cm-2 at a low cell voltage of 1.613 V, better than commercial IrO2 (+) ||Pt/C(-) and most of reported transition metal-based electrolyzers. This work provides a feasible strategy for the exploration and design of industrial water-splitting catalysts for large-scale green hydrogen production
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|a Journal Article
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|a electrocatalyst
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4 |
|a in situ characterization
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4 |
|a non-noble
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4 |
|a oxygen evolution reaction
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4 |
|a water electrolysis
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| 700 |
1 |
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|a Xiang, Rong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yu, Fang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zeng, Jinsong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Yong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Weichang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liao, Liling
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Yan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tang, Dongsheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Haiqing
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 5 vom: 01. Feb., Seite e2305685
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:36
|g year:2024
|g number:5
|g day:01
|g month:02
|g pages:e2305685
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| 856 |
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|u http://dx.doi.org/10.1002/adma.202305685
|3 Volltext
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