Design and synthesis of highly N, S co-doped 3D carbon materials with tunable porosity for supercapacitors
| Autor: | Min Wang, Zhong Jie Zhang, Xiang Ying Chen, Hao Liu, Xin Ming Yang, Duo Duo Zhai |
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| Rok vydání: | 2019 |
| Předmět: |
General Chemical Engineering
Sodium General Engineering General Physics and Astronomy chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Sulfur Nitrogen 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering General Materials Science Sodium dodecyl sulfate 0210 nano-technology Porosity Carbon |
| Zdroj: | Ionics. 26:2031-2041 |
| ISSN: | 1862-0760 0947-7047 |
| DOI: | 10.1007/s11581-019-03402-w |
| Popis: | In present work, we propose a sodium dodecyl sulfate-assisted strategy to fabricate three-dimensional highly nitrogen/sulfur co-doped porous carbon by directly carbonizing melamine-formaldehyde-thiourea resin. More importantly, sodium dodecyl sulfate can be linked with resin polymer through electrostatic organic–organic interaction and serves as pore-forming and sulfur-doping agents. Furthermore, by adding various amounts of sodium dodecyl sulfate, the specific surface areas and nitrogen/sulfur contents are well regulated. When sodium dodecyl sulfate is 20 g, the sample possesses high surface area (939 m2 g−1), large pore volume (1.34 cm3 g−1), and high contents of nitrogen/sulfur (13.62 at% and 3.96 at%, respectively). In the two-electrode test, it delivers good coulombic efficiency (90.9% at 1 A g−1) and cycling stability (94.7% of capacitance retentions at 4 A g−1 after 10,000 cycles) in alkaline electrolyte and high energy density (31.9 Wh kg−1) in EMIMBF4/AN solution. |
| Databáze: | OpenAIRE |
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