One-dimensional carbon-based materials suffer from inherent limitations such as structural collapse and high mass transfer resistance.In this study,a novel single-micelle-based dual-templates assembly strategy of usin...One-dimensional carbon-based materials suffer from inherent limitations such as structural collapse and high mass transfer resistance.In this study,a novel single-micelle-based dual-templates assembly strategy of using polystyrene-block-poly(4-vinylpyridine)-block-poly(ethylene oxide)(PS-PVP-PEO)single micelles as soft templates and one-dimensional(1D)SiO2 as hard templates was adopted.Utilizing dopamine as the carbon and nitrogen source,one-dimensional mesoporous nitrogen-doped carbon nanorods(1D N-mC)with hierarchical porous architecture were successfully prepared.Such hierarchical porous material features unique rich spherical pores with a specific surface area of 494 m2 g^(-1)and uniformly distributed nitrogen doping sites.Hence,this kind of 1D hierarchical mesoporous carbon material exhibits a specific capacitance of 320 F g^(-1)at 1 A g^(-1),a capacity retention rate of over 72%at a high rate of 10 A g^(-1),and only a 11%capacity decay after 5000 cycles.These properties effectively address the inherent defects aforementioned(structure collapse and high mass transfer resistance)of conventional carbon-based materials,laying a solid foundation for the development of high-performance energy storage devices.展开更多
基金supported by the National Key Research and Development Program of China(2024YFE0101100)under its Singapore-China Joint Flagship Project(Clean Energy)the National Natural Science Foundation of China(22305132,22475112 and 22365021)+1 种基金the Inner Mongolia Natural Science Foundation(2025LHMS02016)the Open Research Fund of CNMGE Platform&NSCC-TJ(CNMGE2025001).
文摘One-dimensional carbon-based materials suffer from inherent limitations such as structural collapse and high mass transfer resistance.In this study,a novel single-micelle-based dual-templates assembly strategy of using polystyrene-block-poly(4-vinylpyridine)-block-poly(ethylene oxide)(PS-PVP-PEO)single micelles as soft templates and one-dimensional(1D)SiO2 as hard templates was adopted.Utilizing dopamine as the carbon and nitrogen source,one-dimensional mesoporous nitrogen-doped carbon nanorods(1D N-mC)with hierarchical porous architecture were successfully prepared.Such hierarchical porous material features unique rich spherical pores with a specific surface area of 494 m2 g^(-1)and uniformly distributed nitrogen doping sites.Hence,this kind of 1D hierarchical mesoporous carbon material exhibits a specific capacitance of 320 F g^(-1)at 1 A g^(-1),a capacity retention rate of over 72%at a high rate of 10 A g^(-1),and only a 11%capacity decay after 5000 cycles.These properties effectively address the inherent defects aforementioned(structure collapse and high mass transfer resistance)of conventional carbon-based materials,laying a solid foundation for the development of high-performance energy storage devices.
