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EnglishIonic liquids (ILs) are receiving great attention as solvent-free "green" electrolytes for high voltage supercapacitors because of their very low vapour pressure, wide electrochemical stability window and good conductivity at operating temperatures of supercapacitors-PEM fuel cell coupled systems for automotive application. We pursued the strategy of using ILs in hybrid supercapacitors with activated carbon (AC) as the negative electrode and poly(3-methylthiophene) (pMeT) as the positive, and we demonstrated the cycling stability over more than 15,000 galvanostatic cycles at 60°C of the supercapacitor with pyrrolidinium-based ionic liquid electrolyte. This result, obtained with high-purity IL, was achieved with still not-optimized electrode materials. Here we present and discuss the results of our study for the optimization of AC/IL/pMeT hybrid supercapacitor components.
| Titolo: | Hybrid supercapacitors with ionic liquids as solvent-free electrolytes | |
| Autore/i: | A. Balducci; P. Simon; MASTRAGOSTINO, MARINA; SOAVI, FRANCESCA; G. B. Appetecchi; S. Passerini | |
| Autore/i Unibo: | ||
| Anno: | 2005 | |
| Titolo del libro: | 7th International Symposium on Molten salts Chemistry & Technology | |
| Pagina iniziale: | 519 | |
| Pagina finale: | 521 | |
| Abstract: | Ionic liquids (ILs) are receiving great attention as solvent-free "green" electrolytes for high voltage supercapacitors because of their very low vapour pressure, wide electrochemical stability window and good conductivity at operating temperatures of supercapacitors-PEM fuel cell coupled systems for automotive application. We pursued the strategy of using ILs in hybrid supercapacitors with activated carbon (AC) as the negative electrode and poly(3-methylthiophene) (pMeT) as the positive, and we demonstrated the cycling stability over more than 15,000 galvanostatic cycles at 60°C of the supercapacitor with pyrrolidinium-based ionic liquid electrolyte. This result, obtained with high-purity IL, was achieved with still not-optimized electrode materials. Here we present and discuss the results of our study for the optimization of AC/IL/pMeT hybrid supercapacitor components. | |
| Data prodotto definitivo in UGOV: | 21-feb-2006 | |
| Appare nelle tipologie: | 4.02 Riassunto (Abstract) |
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