Anchoring Ultrasmall Pt Nanocrystals onto Carbon Nanohorn-Decorated 3D Graphene Networks to Boost Methanol Oxidation Reaction
The successful commercialization of the direct methanol fuel cell (DMFC) is inseparable from the development of advanced Pt-based anode catalysts with high electrocatalytic activity and acceptable manufacturing cost. Here, we present a robust bottom-up strategy to anchor ultrasmall Pt nanocrystals w...
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| Veröffentlicht in: | International journal of energy research 2023-11, Vol.2023, p.1-12 |
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| creator | Shen, Binfeng Yao, Haitao He, Haiyan Huang, Huajie |
| description | The successful commercialization of the direct methanol fuel cell (DMFC) is inseparable from the development of advanced Pt-based anode catalysts with high electrocatalytic activity and acceptable manufacturing cost. Here, we present a robust bottom-up strategy to anchor ultrasmall Pt nanocrystals with an average diameter of only 2.3 nm onto carbon nanohorn-decorated three-dimensional (3D) graphene networks (Pt/CNH-G) through a controllable self-assembly process. The as-derived 3D Pt/CNH-G catalysts manifest a series of distinctive architectural advantages, such as interconnected porous frameworks, large accessible surface areas, plentiful active cones, highly dispersed Pt nanoparticles, and good electron conductivity. Consequently, the optimized Pt/CNH-G catalyst is endowed with exceptional methanol oxidation properties with a large electrochemical active surface area of 128.6 m2 g-1, a high mass activity of 1626.0 mA mg-1, and excellent long-term stability, which are significantly superior to those of conventional Pt catalysts supported by carbon black, carbon nanotube, carbon nanohorn, and graphene matrices. |
| doi_str_mv | 10.1155/2023/7030594 |
| format | Article |
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Here, we present a robust bottom-up strategy to anchor ultrasmall Pt nanocrystals with an average diameter of only 2.3 nm onto carbon nanohorn-decorated three-dimensional (3D) graphene networks (Pt/CNH-G) through a controllable self-assembly process. The as-derived 3D Pt/CNH-G catalysts manifest a series of distinctive architectural advantages, such as interconnected porous frameworks, large accessible surface areas, plentiful active cones, highly dispersed Pt nanoparticles, and good electron conductivity. Consequently, the optimized Pt/CNH-G catalyst is endowed with exceptional methanol oxidation properties with a large electrochemical active surface area of 128.6 m2 g-1, a high mass activity of 1626.0 mA mg-1, and excellent long-term stability, which are significantly superior to those of conventional Pt catalysts supported by carbon black, carbon nanotube, carbon nanohorn, and graphene matrices.</description><identifier>ISSN: 0363-907X</identifier><identifier>EISSN: 1099-114X</identifier><identifier>DOI: 10.1155/2023/7030594</identifier><language>eng</language><publisher>Bognor Regis: Hindawi</publisher><subject>Black carbon ; Carbon ; Carbon black ; Carbon nanotubes ; Catalysts ; Commercialization ; Controllability ; Crystals ; Diameters ; Efficiency ; Electrochemistry ; Electrodes ; Electrolytes ; Electron conductivity ; Energy consumption ; Fuel cells ; Graphene ; Graphite ; Hydrogels ; Marketing ; Methanol ; Nanocrystals ; Nanoparticles ; Operating costs ; Oxidation ; Production costs ; Ratios ; Scanning electron microscopy ; Self-assembly ; Surface area</subject><ispartof>International journal of energy research, 2023-11, Vol.2023, p.1-12</ispartof><rights>Copyright © 2023 Binfeng Shen et al.</rights><rights>Copyright © 2023 Binfeng Shen et al. 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| subjects | Black carbon Carbon Carbon black Carbon nanotubes Catalysts Commercialization Controllability Crystals Diameters Efficiency Electrochemistry Electrodes Electrolytes Electron conductivity Energy consumption Fuel cells Graphene Graphite Hydrogels Marketing Methanol Nanocrystals Nanoparticles Operating costs Oxidation Production costs Ratios Scanning electron microscopy Self-assembly Surface area |
| title | Anchoring Ultrasmall Pt Nanocrystals onto Carbon Nanohorn-Decorated 3D Graphene Networks to Boost Methanol Oxidation Reaction |
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