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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201706279
|2 doi
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|a pubmed24n0933.xml
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|a (DE-627)NLM280117329
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|a (NLM)29349907
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Chen, Guangbo
|e verfasserin
|4 aut
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|a Accelerated Hydrogen Evolution Kinetics on NiFe-Layered Double Hydroxide Electrocatalysts by Tailoring Water Dissociation Active Sites
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|c 2018
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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 Completed 01.08.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Owing to its earth abundance, low kinetic overpotential, and superior stability, NiFe-layered double hydroxide (NiFe-LDH) has emerged as a promising electrocatalyst for catalyzing water splitting, especially oxygen evolution reaction (OER), in alkaline solutions. Unfortunately, as a result of extremely sluggish water dissociation kinetics (Volmer step), hydrogen evolution reaction (HER) activity of the NiFe-LDH is rather poor in alkaline environment. Here a novel strategy is demonstrated for substantially accelerating the hydrogen evolution kinetics of the NiFe-LDH by partially substituting Fe atoms with Ru. In a 1 m KOH solution, the as-synthesized Ru-doped NiFe-LDH nanosheets (NiFeRu-LDH) exhibit excellent HER performance with an overpotential of 29 mV at 10 mA cm-2 , which is much lower than those of noble metal Pt/C and reported electrocatalysts. Both experimental and theoretical results reveal that the introduction of Ru atoms into NiFe-LDH can efficiently reduce energy barrier of the Volmer step, eventually accelerating its HER kinetics. Benefitting from its outstanding HER activity and remained excellent OER activity, the NiFeRu-LDH steadily drives an alkaline electrolyzer with a current density of 10 mA cm-2 at a cell voltage of 1.52 V, which is much lower than the values for Pt/C-Ir/C couple and state-of-the-art overall water-splitting electrocatalysts
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|a Journal Article
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|a NiFe-layered double hydroxide
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4 |
|a electrocatalysis
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|a hydrogen evolution reaction
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|a ruthenium
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4 |
|a water dissociation
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1 |
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|a Wang, Tao
|e verfasserin
|4 aut
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1 |
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|a Zhang, Jian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Pan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sun, Hanjun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhuang, Xiaodong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Mingwei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Feng, Xinliang
|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 30(2018), 10 vom: 18. März
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:30
|g year:2018
|g number:10
|g day:18
|g month:03
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|u http://dx.doi.org/10.1002/adma.201706279
|3 Volltext
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