Three-dimensional pore structure of activated carbon monolithic derived from hierarchically bamboo stem for supercapacitor application
| Autor: | Erman Taer, Lini Pratiwi, Apriwandi Apriwandi, Widya Sinta Mustika, Rika Taslim, Agustino Agustino |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Communications in Science and Technology, Vol 5, Iss 1, Pp 22-30 (2020) |
| Druh dokumentu: | article |
| ISSN: | 2502-9258 2502-9266 |
| DOI: | 10.21924/cst.5.1.2020.180 |
| Popis: | A three-dimensional pore structure on activated carbon derived from hierarchically bamboo stem was synthesized in the monolithic form for increased applicability as a supercapacitor electrode. The preparation involved two step carbonizations, using a chemical activation at different concentrations. Subsequently, the morphology, chemical content, specific surface area and pore size distribution, as well as crystalline degree were evaluated with scanning electron microscopy, energy X-ray (EDX), N2 sorption and X-ray diffraction, respectively. Therefore, cyclic voltammetry (CV) was used to assess the electrochemical performance, in a two electrode system. The result shows the significant impact of the three-dimensional structure on electrochemical performance, and the optimized sample exhibited specific capacitance of 168.8 F g-1, energy density of 23.44 Wh kg-1, and power density of 84.46 W kg-1. |
| Databáze: | Directory of Open Access Journals |
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