Scalable production of hierarchical N-doping porous carbon@Cu composite fiber based on rapid gelling strategy for high-performance supercapacitor
| Autor: | Zeng Qinqin, Chen Jiahao, Yang Hui, Zhou Jiaming, Liang Tongxiang, Jia Jingwen, Wang Yunfeng, Ye Shewen |
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| Rok vydání: | 2019 |
| Předmět: |
Supercapacitor
Materials science Carbonization Mechanical Engineering Composite number Metals and Alloys chemistry.chemical_element Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry Chemical engineering Mechanics of Materials Specific surface area Materials Chemistry Fiber 0210 nano-technology Porosity Carbon |
| Zdroj: | Journal of Alloys and Compounds. 792:976-982 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2019.04.138 |
| Popis: | Because of high specific surface area, rich active sites and superior electron conductivity, element-doping porous carbon@metal nanoparticles composite is identified as a promising electrode material for supercapacitor. Herein, guar gum (GG) and melamine are used as carbon and N sources, respectively. Because of the high affinity between Cu(OH)2 and GG, gel fibers with high yield and good size distribution can be obtained; after carbonization and pickling, the N-doping porous carbon@Cu composite fiber (NPCF@Cu), with high specific surface area, rich porous structure, and uniform distributed Cu nanoparticles, has been successfully prepared. Results show that the NPCF@Cu-10 exhibits high specific capacitance (334.6 F g−1 at 2 A g−1) and excellent rate capability (62.7% capacity retention at 50 A g−1 versus that of 2 A g−1). Furthermore, its superior electrochemical performance in two-electrode configuration demonstrates that the NPCF@Cu can be utilized as a promising electrode material for supercapacitor. |
| Databáze: | OpenAIRE |
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