Capacitors Based on Polypyrrole Nanowire Electrodeposits
link https://doi.org/10.3390/polym14245476account_box Ramirez, A. M. R.account_box del Valle, M. A.account_box Ortega, E.account_box Diaz, F. R.account_box Gacitua, M. A.
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The electrochemical polymerization of polypyrrole nanowires is carried out using potentiodynamic and galvanostatic methods in order to enhance the performance of the modified electrodes as capacitor devices. The electrochemical, spectroscopic, and morphological properties are determined through cyclic voltammetry, Raman spectroscopy and scanning electron microscopy, respectively, corroborating the presence of PPy-nw in dimensions of 30 nm in diameter. Characterization as a capacitor revealed that the nanowire structure enhances key parameters such as specific capacitance with 60 times greater value than bulk polymer modification, in addition to a significant increase in stability. In this way, it is verified that electrodes modified with polypyrrole nanowires obtained in situ by electrochemical methods constitute an excellent candidate for the development of capacitors.
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| Autor | Ramirez, A. M. R. del Valle, M. A. Ortega, E. Diaz, F. R. Gacitua, M. A. |
| Título | Capacitors Based on Polypyrrole Nanowire Electrodeposits |
| Revista | Polymers |
| ISSN electrónico | 2073-4360 |
| Volumen | 14 |
| Número de publicación | 24 |
| Fecha de publicación | 2022 |
| Resumen | The electrochemical polymerization of polypyrrole nanowires is carried out using potentiodynamic and galvanostatic methods in order to enhance the performance of the modified electrodes as capacitor devices. The electrochemical, spectroscopic, and morphological properties are determined through cyclic voltammetry, Raman spectroscopy and scanning electron microscopy, respectively, corroborating the presence of PPy-nw in dimensions of 30 nm in diameter. Characterization as a capacitor revealed that the nanowire structure enhances key parameters such as specific capacitance with 60 times greater value than bulk polymer modification, in addition to a significant increase in stability. In this way, it is verified that electrodes modified with polypyrrole nanowires obtained in situ by electrochemical methods constitute an excellent candidate for the development of capacitors. |
| Derechos | acceso restringido |
| Agencia financiadora | ANID-CHILE, FONDECYT |
| DOI | 10.3390/polym14245476 |
| Enlace | |
| Id de publicación en WoS | WOS:000904083700001 |
| Palabra clave | capacitors polymer nanowires polymer electrosynthesis polymer nanowire electrosynthesis polypyrrole polypyrrole nanowires |
| Tipo de documento | artículo |