Supercapacitance properties of porous carbon from chemical blending of phenolic resin and aliphatic dicarboxylic acids
| Autor: | Hongbo Liu, Shangqi Yi, Hui Chen, Xuefang Zhang, Xiaohong Xia |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Supercapacitor
Materials science Carbonization Mechanical Engineering chemistry.chemical_element 02 engineering and technology Microporous material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Decomposition 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials Specific surface area General Materials Science Methylene 0210 nano-technology Carbon |
| Zdroj: | Journal of Materials Research. 31:1665-1673 |
| ISSN: | 2044-5326 0884-2914 |
| DOI: | 10.1557/jmr.2016.183 |
| Popis: | We have reported the chemical blending carbonization method to obtain microporous carbon with high surface area for application as electrode materials in supercapacitors. Aliphatic dicarboxylic acids with different methylene numbers (n = 2, 4, 6, and 8) react with phenolic resin (PF) during curing process. Abundant micropores are created in the carbon matrix after the decomposition of grafted or blocked diacids at temperature higher than 400 °C. The specific surface area (SSA) of the carbonized blending system increases with the diacid chain length, but decreases after n > 4 of the chain length. The maximum SSA of the blending system is up to 605.9 m2/g, which increased approximately 68% compared to that of the neat carbonized PF. Electrochemical investigation indicates that the highest specific capacitances of the blending system reaches 175 F/g at a specific current of 0.1 A/g in 30 wt% KOH aqueous electrolyte. Furthermore, the capacitance maintenance achieves 82.8% as the current density enlarged 55 times. |
| Databáze: | OpenAIRE |
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