Transient Charging of Mixed Ionic-Electronic Conductors by Anomalous Diffusion
[EN] Mixed ionic-electronic conductors (MIECs) play a pivotal role in energy storage, bioelectronics, and neuromorphic computing. Understanding charge transport dynamics in these materials is crucial for optimising device performance. This study investigates the transient charging behavior of three...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/225786 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/225786 |
| Access Level: | acceso abierto |
| Palabra clave: | Mixed ionic electronic conductors Anomalous diffusion Transient charging Impedance spectroscopy Ionic transport Neuromorphic devices |
| Sumario: | [EN] Mixed ionic-electronic conductors (MIECs) play a pivotal role in energy storage, bioelectronics, and neuromorphic computing. Understanding charge transport dynamics in these materials is crucial for optimising device performance. This study investigates the transient charging behavior of three representative MIEC systems: PEDOT:PSS, electrochromic WO3, and n-doped PBDF polymer films via electrochemical impedance spectroscopy (EIS) and transient current measurements, focusing on anomalous diffusion. By employing the transmission line model and fractional exponent fitting, a strong correlation is revealed between impedance response and transient current dynamics. The findings provide insights into the role of fractional diffusion in MIEC charge transport and inform the design of advanced electrochemical devices. |
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