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240108s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c03529
|2 doi
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|a eng
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| 100 |
1 |
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|a Zheng, Xingqun
|e verfasserin
|4 aut
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|a Electronic Structure Effect of PtCo Alloy with Adjustable Compositions for Efficient Methanol Electrooxidation
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 13.02.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Various efficient strategies have been developed to overcome the anodic electrocatalyst issue of methanol-based fuel cells owing to their complicated methanol electrooxidation mechanism. In this work, PtCo nanoparticles with adjustable compositions supported on multiwalled carbon nanotubes (Pt1Cox/MWCNTs) through the adsorbing-coating-annealing-etching route were synthesized. Compared with the Pt/C catalyst, Pt1Co3/MWCNTs exhibit better electrocatalytic MOR activity in both activity and durability. Notably, the electrochemical mass and specific activity of the as-prepared catalyst are 1.04 mA μg-1Pt and 2.18 mA cm-2, respectively, which are higher than those of the Pt/C catalyst. Moreover, the as-prepared sample revealed lower onset potential during the CO stripping test. Furthermore, the Pt1Co3/MWCNTs possess a lower current density decrease rate in chronoamperometry and cyclic durability tests. The enhancement of activity and stability of Pt1Co3/MWCNTs could be ascribed to their ordered morphological structure, the electronic interaction between MWCNTs and PtCo nanoparticles, and the suitable electronic structure effect between Pt/Co ratios. The concept of the catalyst design in this study offers a different guideline for constructing the novel methanol electrooxidation catalyst, which will accelerate the widespread fuel cell practical application
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|a Journal Article
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|a Wang, Bin
|e verfasserin
|4 aut
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|a Ren, Bingzhi
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Qingmei
|e verfasserin
|4 aut
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| 700 |
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|a Lu, Shun
|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 1999
|g 40(2024), 6 vom: 13. Feb., Seite 3117-3124
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:40
|g year:2024
|g number:6
|g day:13
|g month:02
|g pages:3117-3124
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|u http://dx.doi.org/10.1021/acs.langmuir.3c03529
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