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Updated: Jun 8, 2026

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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Capacitor de doble capa de grafeno con rendimiento de filtración de línea ac
John R Miller1, R A Outlaw, B C Holloway
1JME, Inc., 17210 Parkland Drive, Shaker Heights, OH 44120, USA. jmecapacitor@att.net
Resumen
Los condensadores eléctricos de doble capa (DLC) con nuevos electrodos de grafeno filtran eficientemente la corriente ondulada. Este diseño ofrece tiempos de respuesta más rápidos y potencial para dispositivos electrónicos más pequeños.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Ingeniería Eléctrica Ingeniería Eléctrica.
- La electroquímica es electroquímica.
Sus antecedentes:
- Los condensadores eléctricos de doble capa (DLC) exhiben una alta capacidad de almacenamiento, pero a menudo funcionan como resistencias en aplicaciones de filtrado por ondas debido a sus electrodos porosos.
- Los DLC tradicionales luchan con el filtrado eficiente de las ondas de CA en la electrónica de potencia.
Objetivo del estudio:
- Desarrollar DLC con un mejor rendimiento de filtrado para corriente continua rectificada.
- Investigar el uso de nanohojas de grafeno orientadas verticalmente para mejorar el rendimiento de los condensadores.
Principales métodos:
- Fabricación de DLCs utilizando nanohojas de grafeno orientadas verticalmente y cultivadas directamente en colectores de corriente metálicos.
- Caracterización del rendimiento del condensador, incluidas las constantes de tiempo RC y la eficiencia de filtrado de ondulación a 120 Hz.
Principales resultados:
- Se ha demostrado una eficiencia de filtración de corriente de 120 hertz utilizando los nuevos DLC.
- Se obtuvieron constantes de tiempo RC significativamente reducidas (<200 microsegundos) en comparación con los DLC típicos (~1 segundo).
- Los electrodos de nanohojas de grafeno mostraron un aumento en el almacenamiento de carga debido a los planos de borde expuestos.
Conclusiones:
- Los electrodos de nanohoja de grafeno orientados verticalmente permiten un eficiente filtrado por ondulación en los DLC.
- Los DLC desarrollados ofrecen un rendimiento superior y un potencial de miniaturización en comparación con los condensadores convencionales.
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