Macroscopic synthesis of ultrafine N–doped carbon nanofibers for superior capacitive energy storage
| Autor: | Liqiang Mai, Ming Xu, Liang Zhou, Zhenhui Liu, Dongyuan Zhao, Qiang Yu, Kwadwo Asare Owusu, Wei Yang, Jianshuai Lv |
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| Rok vydání: | 2019 |
| Předmět: |
Supercapacitor
Multidisciplinary Aqueous solution Materials science Carbon nanofiber Capacitive sensing chemistry.chemical_element 010502 geochemistry & geophysics Electrochemistry 01 natural sciences Chemical engineering chemistry Nanofiber Gravimetric analysis Carbon 0105 earth and related environmental sciences |
| Zdroj: | Science Bulletin. 64:1617-1624 |
| ISSN: | 2095-9273 |
| DOI: | 10.1016/j.scib.2019.08.008 |
| Popis: | Carbon nanofibers (CNFs) with excellent electric conductivity and high surface area have attracted immense research interests in supercapacitors. However, the macroscopic production of CNFs still remains a great challenge. Herein, ultrafine N-doped CNFs (N-CNFs) with a diameter of similar to 20 nm are synthesized through a simple and scalable sol-gel method based on the self-assembly of phenolic resin and cetyltrimethylammonium bromide. When employed in aqueous supercapacitors, the obtained activated N-CNFs manifest a high gravimetric/areal capacitance (380 F g(-1)/1 .7 F cm(-2)) as well as outstanding rate capability and cycling stability. Besides, the activated N-CNFs also demonstrate excellent capacitive performance (330 F g(-1)) in flexible quasi-solid-state supercapacitors. The remarkable electrochemical performance as well as the easy and scalable synthesis makes the N-CNFs a highly promising electrode material for supercapacitors. |
| Databáze: | OpenAIRE |
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