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Polímeros redox-activos procesables en solución de microporosidad intrínseca para el almacenamiento de energía
Anqi Wang1, Rui Tan1, Charlotte Breakwell2
1Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K.
Journal of the American Chemical Society
|September 8, 2022
Resumen
Los nuevos polímeros redox activos de microporosidad intrínseca (PIM) ofrecen una solución para las baterías de iones de litio. Estos materiales superan los problemas de solubilidad y procesamiento, permitiendo un almacenamiento de energía estable y eficiente.
Área de la Ciencia:
- Ciencias de los materiales
- La electroquímica
- Química de los polímeros
Sus antecedentes:
- Los materiales orgánicos redox-activos se exploran como alternativas a los electrodos inorgánicos para el almacenamiento de energía.
- Los desafíos incluyen la solubilidad, el transporte lento de carga / masa y el procesamiento complejo de materiales orgánicos.
Objetivo del estudio:
- Desarrollar polímeros redox activos de microporosidad intrínseca (PIM) para mejorar el rendimiento de las baterías de iones de litio.
- Abordar las limitaciones de los materiales de electrodos orgánicos convencionales a través de la ingeniería molecular.
Principales métodos:
- Polímeros redox activos sintetizados de microporosidad intrínseca (PIM) con sitios redox basados en carbonilo.
- Utilizó técnicas de procesamiento de soluciones para crear películas delgadas y compuestos de polímero y carbono.
- Investigó el transporte y almacenamiento de iones de litio dentro de la estructura porosa de los PIM.
Principales resultados:
- Los PIM desarrollados exhiben una red abierta y microporosa que facilita el transporte rápido de iones.
- Los PIM redox-activos son insolubles en disolventes electrolitos y pueden ser procesados en solución.
- Los electrodos hechos de PIMs procesados en solución mostraron un rendimiento de ciclo mejorado en baterías de iones de litio sin deterioro de capacidad.
Conclusiones:
- Los PIM redox-activos ofrecen una plataforma de materiales prometedora para soluciones avanzadas de almacenamiento de energía.
- La combinación de microporosidad intrínseca, actividad redox y procesamiento de la solución es clave.
- Estos materiales tienen aplicaciones potenciales en baterías, sensores y electrónica.
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