Nanocomposite hydrogels with temperature response for capacitive energy storage
Functional hydrogels are three-dimensional polymeric networks with potential applicability in the field of wearable electronics. However, hydrogels are often used to develop devices with only one functionality. In this work, a multifunctional hydrogel consisting of poly(3,4-ethylenedioxythiophene) (...
| Autores: | , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/387195 |
| Acceso en línea: | https://hdl.handle.net/2117/387195 https://dx.doi.org/10.1021/acsaem.3c00721 |
| Access Level: | acceso abierto |
| Palabra clave: | Nanotechnology Biomedical materials Alginate Carbon nanoparticles Conductive hydrogel Manganese oxide poly(3 4-ethylenedioxythiophene) Supercapacitor Temperature sensor Nanotecnologia Materials biomèdics Àrees temàtiques de la UPC::Enginyeria química |
| Sumario: | Functional hydrogels are three-dimensional polymeric networks with potential applicability in the field of wearable electronics. However, hydrogels are often used to develop devices with only one functionality. In this work, a multifunctional hydrogel consisting of poly(3,4-ethylenedioxythiophene) (PEDOT), alginate (Alg), carbon nanoparticles (CNPs), and manganese oxide has been manufactured for devices that can simultaneously store energy (supercapacitor) and sense temperature. The Alg and PEDOT interpenetration allows for obtaining a flexible and electrically conductive hydrogel with an open and interconnected porous structure. The incorporation of CNPs improves electrical conductivity and confers synergies with manganese oxide, which provide energy storage capability. Furthermore, the resistance of the hydrogel varies linearly with the temperature, this behavior being observed consistently and without hysteresis throughout consecutive heating and cooling cycles. Thus, the PEDOT/Alg/CNP/MnO2 hydrogel shows good capacitance (42 mF cm–2), capacitance retention (87%), and good temperature sensitivity (-1.05% °C–1). |
|---|