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|a 10.1021/acs.langmuir.4c00078
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|a eng
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|a Zhang, Xupeng
|e verfasserin
|4 aut
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|a Innovative Catalyst Design of Sea-Urchin-like NiCoP Nanoneedle Arrays Supported on N-Doped Carbon Nanospheres for Enhanced HER Performance
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a Date Revised 12.03.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Hydrogen (H2) stands as a clean energy alternative to fossil fuels, especially within the domain of the hydrogen evolution reaction (HER), offering prospective solutions to mitigate both environmental and energy-related challenges. In this work, we successfully synthesized a sea-urchin-like catalyst, specifically a nickel-cobalt phosphide nanoneedle array on N-doped carbon nanospheres (Ni0.5Co1.5PNCSs), for efficient HER by a sequential hydrothermal and low-temperature phosphating process. The catalyst exhibits sea-urchin-like structures, offering a specific surface area of 298 m2 g-1 and consequently furnishing a greater abundance of active sites. Comparing with non-sea-urchin-like Ni0.5Co1.5P@CN catalysts, the Ni0.5Co1.5P@NCSs exhibit an overpotential of 163 mV at 10 mA cm-2, a Tafel slope of 60 mV dec-1, and a maintained current density of approximately 90% during 50 h of continuous electrolysis. Experiments demonstrate that the outstanding electrochemical properties of the Ni0.5Co1.5P@NCSs originate from nitrogen doping of carbon spheres, the distinctive morphology of sea-urchin-like nanoneedle arrays, and simultaneous enhancements in intermediate adsorption energy, charge transfer, and electrolyte diffusion channel shortening. This work emphasizes a preparation strategy for synthesizing an attractive electrocatalyst with a low cost and efficient HER performance
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|a Journal Article
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|a Wang, Jiabo
|e verfasserin
|4 aut
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|a Bi, Yiyang
|e verfasserin
|4 aut
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|a Wang, Ying
|e verfasserin
|4 aut
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|a Liu, Qun
|e verfasserin
|4 aut
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|a Zhang, Yu
|e verfasserin
|4 aut
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|a Chen, Li
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 40(2024), 10 vom: 12. März, Seite 5518-5526
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|x 1520-5827
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|g volume:40
|g year:2024
|g number:10
|g day:12
|g month:03
|g pages:5518-5526
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|u http://dx.doi.org/10.1021/acs.langmuir.4c00078
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