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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/104| Electroactive materials based on nanometric graphite and polyaniline for application in supercapacitors | |
| FLOR YANHIRA RENTERIA BALTIERREZ | |
| ERASTO ARMANDO ZARAGOZA CONTRERAS | |
| Acceso Abierto | |
| Atribución | |
| In this study, we have taken advantage of dual functionality of anilinium dodecylsulfate (DS-AN) and anilinium dodecyl benzenesulphonate (DBS-AN) both to exfoliate expanded graphite (EG) and to produce nanometric graphite / polyaniline (NG/PANI) composites, in a two-step method. On one hand, DS-AN performs the common functions of a surfactant, and on the other hand, the salt is a monomer to propagate polyaniline; that is, DS-AN and DBS-AN are reactive surfactants (or surfmers). Conducting polymers have been widely applied for fabricating electrochemical devices, such like sensors, actuators, and solar cells. To improve device performance, NG/PANI composite have been used to replace pure PANI or NG. In this way, the composites may combine the advantageous electrochemical properties of polyaniline with the XIII electrical, structural, and optical properties of nanometric graphite to produce synergy effects. The electrochemical performance of series of composites was evaluated by cyclic voltammetry, electrochemical impedance spectroscopy and charge-discharge cycling with three-electrode cell configuration. The capacitive responses between -0.20 and 1V (vs. Ag/AgCl) in concentrated acidic media are demonstrated. NG and polymer binder (Nafion) were used to fabricate NG/PANI electrodes for supercapacitors. The composite electrode was carried out at different conditions showing much higher specific capacitance than pure polyaniline and graphite electrodes under the same conditions | |
| 2012-11 | |
| Tesis de maestría | |
| Inglés | |
| QUÍMICA | |
| Aparece en las colecciones: | Maestría en Ciencia de Materiales |
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| Fichero | Descripción | Tamaño | Formato | |
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| Tesis Flor Yanhira Rentería Baltiérrez.pdf | 4.19 MB | Adobe PDF | Visualizar/Abrir |