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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202003414
|2 doi
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|a pubmed24n1046.xml
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|a (DE-627)NLM313891222
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|a (NLM)32815243
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|a DE-627
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|a eng
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| 100 |
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|a Li, Xiaopeng
|e verfasserin
|4 aut
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|a Sequential Electrodeposition of Bifunctional Catalytically Active Structures in MoO3 /Ni-NiO Composite Electrocatalysts for Selective Hydrogen and Oxygen Evolution
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 07.12.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 Wiley-VCH GmbH.
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|a Exploring earth-abundant and highly efficient electrocatalysts is critical for further development of water electrolyzer systems. Integrating bifunctional catalytically active sites into one multi-component might greatly improve the overall water-splitting performance. In this work, amorphous NiO nanosheets coupled with ultrafine Ni and MoO3 nanoparticles (MoO3 /Ni-NiO), which contains two heterostructures (i.e., Ni-NiO and MoO3 -NiO), is fabricated via a novel sequential electrodeposition strategy. The as-synthesized MoO3 /Ni-NiO composite exhibits superior electrocatalytic properties, affording low overpotentials of 62 mV at 10 mA cm-2 and 347 mV at 100 mA cm-2 for catalyzing the hydrogen and the oxygen evolution reaction (HER/OER), respectively. Moreover, the MoO3 /Ni-NiO hybrid enables the overall alkaline water-splitting at a low cell voltage of 1.55 V to achieve 10 mA cm-2 with outstanding catalytic durability, significantly outperforming the noble-metal catalysts and many materials previously reported. Experimental and theoretical investigations collectively demonstrate the generated Ni-NiO and MoO3 -NiO heterostructures significantly reduce the energetic barrier and act as catalytically active centers for selective HER and OER, synergistically accelerating the overall water-splitting process. This work helps to fundamentally understand the heterostructure-dependent mechanism, providing guidance for the rational design and oriented construction of hybrid nanomaterials for diverse catalytic processes
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|a Journal Article
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|a electrocatalysts
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|a heterointerfaces
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|a hydrogen evolution reaction
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|a oxygen evolution reaction
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4 |
|a transition metal oxides
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|a water-splitting
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|a Wang, Yang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Jiajun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Da, Yumin
|e verfasserin
|4 aut
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1 |
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|a Zhang, Jinfeng
|e verfasserin
|4 aut
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1 |
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|a Li, Lanlan
|e verfasserin
|4 aut
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1 |
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|a Zhong, Cheng
|e verfasserin
|4 aut
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| 700 |
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|a Deng, Yida
|e verfasserin
|4 aut
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|a Han, Xiaopeng
|e verfasserin
|4 aut
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| 700 |
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|a Hu, Wenbin
|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 32(2020), 39 vom: 03. Okt., Seite e2003414
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:32
|g year:2020
|g number:39
|g day:03
|g month:10
|g pages:e2003414
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|u http://dx.doi.org/10.1002/adma.202003414
|3 Volltext
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