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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202108505
|2 doi
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|a pubmed24n1116.xml
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|a (NLM)34969159
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|a eng
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|a Wu, Tong
|e verfasserin
|4 aut
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|a Engineering Metallic Heterostructure Based on Ni3 N and 2M-MoS2 for Alkaline Water Electrolysis with Industry-Compatible Current Density and Stability
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|c 2022
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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 03.03.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley-VCH GmbH.
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|a Alkaline water electrolysis is commercially desirable to realize large-scale hydrogen production. Although nonprecious catalysts exhibit high electrocatalytic activity at low current density (10-50 mA cm-2 ), it is still challenging to achieve industrially required current density over 500 mA cm-2 due to inefficient electron transport and competitive adsorption between hydroxyl and water. Herein, the authors design a novel metallic heterostructure based on nickel nitride and monoclinic molybdenum disulfide (Ni3 N2M-MoS2 ) for extraordinary water electrolysis. The Ni3 N@2M-MoS2 composite with heterointerface provides two kinds of separated reaction sites to overcome the steric hindrance of competitive hydroxyl/water adsorption. The kinetically decoupled hydroxyl/water adsorption/dissociation and metallic conductivity of Ni3 N@2M-MoS2 enable hydrogen production from Ni3 N and oxygen evolution from the heterointerface at large current density. The metallic heterostructure is proved to be imperative for the stabilization and activation of Ni3 N@2M-MoS2 , which can efficiently regulate the active electronic states of Ni/N atoms around the Fermi-level through the charge transfer between the active atoms of Ni3 N and MoMo bonds of 2M-MoS2 to boost overall water splitting. The Ni3 N@2M-MoS2 incorporated water electrolyzer requires ultralow cell voltage of 1.644 V@1000 mA cm-2 with ≈100% retention over 300 h, far exceeding the commercial Pt/C║RuO2 (2.41 V@1000 mA cm-2 , 100 h, 58.2%)
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|a Journal Article
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|a active electronic states
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|a alkaline water electrolysis
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|a interface engineering
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|a large current density
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|a metallic heterostructures
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1 |
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|a Song, Erhong
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Shaoning
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Luo, Mengjia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Chendong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Wei
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Jianjun
|e verfasserin
|4 aut
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| 700 |
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|a Huang, Fuqiang
|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 34(2022), 9 vom: 21. März, Seite e2108505
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:34
|g year:2022
|g number:9
|g day:21
|g month:03
|g pages:e2108505
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|u http://dx.doi.org/10.1002/adma.202108505
|3 Volltext
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