Heteroatom-doped porous carbon electrodes derived from a carbonyl-based aromatic porous polymer for supercapacitors
| Autor: | Pillaiyar Puthiaraj, Hong-Gyu Seong, Jae-Il So, Minjae Kim, Sang Eun Shim, Jihyeong Ryu, Wha-Seung Ahn |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Heteroatom chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry Electrochemistry 01 natural sciences Materials Chemistry medicine Supercapacitor Carbonization Mechanical Engineering Metals and Alloys Microporous material 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry Chemical engineering Mechanics of Materials 0210 nano-technology Carbon Activated carbon medicine.drug |
| Zdroj: | Synthetic Metals. 243:115-120 |
| ISSN: | 0379-6779 |
| Popis: | Two different heteroatom-doped microporous carbon materials, c-CBAP-N (nitrogen-doped) and c-CBAP-NS (nitrogen/sulfur co-doped), were prepared using a carbonyl-based aromatic porous polymer (CBAP) after amine-functionalization or chemical impregnation, followed by carbonization at 800 °C. The surface areas of c-CBAP-N and c-CBAP-NS were 1060 m2 g−1 and 1047 m2 g−1, respectively, which are predominantly microporous with a uniform pore size distribution centered at 0.4 nm. Their electrochemical performances as supercapacitors were measured by a three-electrode system using a 6 M KOH solution as the electrolyte. The specific capacitances of the c-CBAP-N and c-CBAP-NS electrodes were 203.2 F g−1 and 157.7 F g−1, respectively, as measured by galvanostatic discharge–charge analysis at a current density of 1 A g−1. Notably, these values are significantly higher than that of commercial activated carbon (130 F g−1 at 1 A g−1). |
| Databáze: | OpenAIRE |
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