Hydrogels for flexible and compressible free standing cellulose supercapacitors
| Autor: | Lourdes Franco, Carlos Alemán, Francesc Estrany, Maricruz G. Saborío, Maria M. Pérez-Madrigal, Juan Torras, Jordi Casanovas, Guillem Ruano, Petra Svelic |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Doctorat en Polímers i Biopolímers, Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. IMEM-BRT- Innovation in Materials and Molecular Engineering - Biomaterials for Regenerative Therapies, Universitat Politècnica de Catalunya. PSEP - Polimers Sintètics: Estructura i Propietats. Polimers Biodegradables., Universitat Politècnica de Catalunya. PSEP - Polimers Sintètics: Estructura i Propietats. Polimers Biodegradables |
| Rok vydání: | 2019 |
| Předmět: |
Energy storage
Materials science Polymers and Plastics Polimerització Conducting polymers General Physics and Astronomy 02 engineering and technology Electrolyte 010402 general chemistry 01 natural sciences Polymerization chemistry.chemical_compound Enginyeria química [Àrees temàtiques de la UPC] Flexible electrodes Materials Chemistry medicine In situ polymerization Colloids Polímers conductors Cellulose Supercapacitor Conductive polymer Conducting polymer Energia -- Emmagatzematge Organic Chemistry technology industry and agriculture Wearable electronics 021001 nanoscience & nanotechnology 0104 chemical sciences Carboxymethyl cellulose chemistry Chemical engineering Self-healing hydrogels Materials conductors Cyclic voltammetry 0210 nano-technology medicine.drug |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2019.06.011 |
| Popis: | Cellulose-based supercapacitors display important advantages in comparison with devices fabricated with other materials, regarding environmental friendliness, flexibility, cost and versatility. Recent progress in the field has been mainly focused on the utilization of cellulose fibres as: structural mechanical reinforcement of electrodes; precursors of electrically active carbon-based materials; or primary electrolytes that act as reservoirs of secondary electrolytes. In this work, a flexible, lightweight, robust, portable and manageable all-carboxymethyl cellulose symmetric supercapacitor has been obtained by assembling two electrodes based on carboxymethyl cellulose hydrogels to a solid electrolytic medium formulated with the same material. Hydrogels, which were made by cross-linking carboxymethyl cellulose paste with citric acid in water, rendered not only effective solid electrolytic media by simply loading NaCl but also electroactive electrodes. For the latter, conducting polymer microparticles, which were loaded into the hydrogel network during the physical cross-linking step, were appropriately connected through the in situ anodic polymerization of a similar conducting polymer in aqueous medium, thus creating conduction paths. The performance of the assembled supercapacitors has been proved by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy. This design opens a new window for the green and mass production of flexible cellulose-based supercapacitors |
| Databáze: | OpenAIRE |
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