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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c02673
|2 doi
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|a pubmed24n1168.xml
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|a (DE-627)NLM350605122
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|a (NLM)36548983
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|a DE-627
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|e rakwb
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|a eng
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1 |
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|a Wang, Yafeng
|e verfasserin
|4 aut
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|a Fabrication of Flower-like Rhodium-Doped β-Ni(OH)2 as an Efficient Electrocatalyst for Methanol Oxidation Reaction in Alkaline Media
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|c 2023
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 10.01.2023
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|a Date Revised 11.01.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a In this study, β-Ni(OH)2 with a unique flower-like morphology was synthesized through a hydrothermal method. The doping of Rh in β-Ni(OH)2 was achieved by a reduction method. The as-synthesized catalysts were characterized by X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy for the crystal structure, morphology, composition, and chemical state analysis. The electrochemical tests revealed that the doping of Rh can significantly increase the electrocatalytic performance of β-Ni(OH)2 in 1.0 M KOH solution. The methanol oxidation peak current density of Rh-doped β-Ni(OH)2 reached 95 mA cm-2 with a Tafel slope of 40 mV dec-1. The reason for these improvements is that Rh can suppress the phase transformation of NiOOH from β to α. Meanwhile, the electronic structure change of nickel in β-Ni(OH)2 and the defect ratio increase caused by Rh doping are beneficial to methanol oxidation reaction (MOR) catalytic activity. Furthermore, the synergistic effect between Rh and Ni(OH)2 improved the surface activity of β-NiOOH. The doping of Rh in β-Ni(OH)2 is initiative in this work, which provides a new strategy to design highly efficient and cost-effective MOR electrocatalysts for alkaline DMFCs
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|a Journal Article
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|a Luo, Xian
|e verfasserin
|4 aut
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|a Lu, Wenjie
|e verfasserin
|4 aut
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|a Huang, Bin
|e verfasserin
|4 aut
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|a Yang, Yanqing
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 39(2023), 1 vom: 10. Jan., Seite 423-432
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:39
|g year:2023
|g number:1
|g day:10
|g month:01
|g pages:423-432
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|u http://dx.doi.org/10.1021/acs.langmuir.2c02673
|3 Volltext
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