Supercapacitors from Activated Carbon Derived from Banana Fibers
| Autor: | Bingqing Wei, A. M. Stephan, Sabu Thomas, Cheng Luo, K. S. Nahm, Vivek Subramanian |
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| Rok vydání: | 2007 |
| Předmět: |
Supercapacitor
Materials science chemistry.chemical_element Electrolyte Surfaces Coatings and Films Electronic Optical and Magnetic Materials General Energy Adsorption chemistry Chemical engineering Desorption Specific surface area medicine Organic chemistry Physical and Theoretical Chemistry Cyclic voltammetry Carbon Activated carbon medicine.drug |
| Zdroj: | The Journal of Physical Chemistry C. 111:7527-7531 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp067009t |
| Popis: | Carbon materials were synthesized from banana fibers by treating the fibers with pore-forming substances such as ZnCl2 and KOH with an intention to improve the surface area and their electrochemical performance as electrical double-layer capacitor electrodes. The performance of these materials was studied in a neutral electrolyte for the first time. There has been a substantive increase in the specific surface area of the treated carbon material because of the effective pore generations. The structural and surface properties of the prepared carbon materials were studied using scanning electron microscopy and N2 adsorption/desorption studies. The surface area of the 10% ZnCl2 treated sample was found to be 1097 m2/g. The electrochemical properties of untreated and porogen treated carbons were evaluated by using cyclic voltammetry and galvanostatic charge−discharge studies, and the specific capacitance as high as 74 F/g in 1 M Na2SO4 neutral electrolyte was obtained for 10% ZnCl2 treated carbon as determine... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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