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240606s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202403151
|2 doi
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|a pubmed24n1488.xml
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|a (DE-627)NLM373306997
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|a (NLM)38842511
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|a eng
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|a Li, Changqing
|e verfasserin
|4 aut
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|a Direct Electroplating Ruthenium Precursor on the Surface Oxidized Nickel Foam for Efficient and Stable Bifunctional Alkaline Water Electrolysis
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|c 2024
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|a Text
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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 01.08.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a Water electrolysis to produce hydrogen (H2) using renewable energy is one of the most promising candidates for realizing carbon neutrality, but its reaction kinetics is hindered by sluggish anodic oxygen evolution reaction (OER). Ruthenium (Ru) in its high-valence state (oxide) provides one of the most active OER sites and is less costly, but thermodynamically unstable. The strong interaction between Ru nanoparticles (NPs) and nickel hydroxide (Ni(OH)2) is leveraged to directly form Ru-Ni(OH)2 on the surface of a porous nickel foam (NF) electrode via spontaneous galvanic replacement reaction. The formation of Ru─O─Ni bonds at the interface of the Ru NPs and Ni(OH)2 (Ru-Ni(OH)2) on the surface oxidized NF significantly enhance stability of the Ru-Ni(OH)2/NF electrode. In addition to OER, the catalyst is active enough for the hydrogen evolution reaction (HER). As a result, it is able to deliver overpotentials of 228 and 15 mV to reach 10 mA cm-2 for OER and HER, respectively. An industry-scale evaluation using Ru-Ni(OH)2/NF as both OER and HER electrodes demonstrates a high current density of 1500 mA cm-2 (OER: 410 mV; HER: 240 mV), surpassing commercial RuO2 (OER: 600 mV) and Pt/C based performance (HER: 265 mV)
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|a Journal Article
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|a electrocatalyst
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|a intrinsic stability
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|a local electronic modulation
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|a valence state
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|a water splitting
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|a Kim, Bumseop
|e verfasserin
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|a Li, Zhongping
|e verfasserin
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|a Thapa, Ranjit
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|a Zhang, Yifan
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|a Seo, Jeong-Min
|e verfasserin
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|a Guan, Runnan
|e verfasserin
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|a Tang, Feng
|e verfasserin
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|a Baek, Jae-Hoon
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|a Kim, Young Hyun
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|a Jeon, Jong-Pil
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|a Park, Noejung
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|a Baek, Jong-Beom
|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 36(2024), 31 vom: 01. Aug., Seite e2403151
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:31
|g day:01
|g month:08
|g pages:e2403151
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|u http://dx.doi.org/10.1002/adma.202403151
|3 Volltext
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