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Un método para la compensación dinámica de IR sin oscilaciones durante electrólisis potenciostática

Nandu Ashtaman-Pillai Syamaladevi^1,2, Alain Rieder^1,2, Abhijit Dutta^1,2

¹Department of Chemistry, Biochemistry and Pharmaceutical Sciences, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland.

|December 17, 2025

Resumen

Este estudio presenta un método sencillo para la compensación dinámica de IR al 100% en electrólisis potenciostática. Esta técnica mide con precisión el rendimiento del electrocatalizador manteniendo un potencial de electrodo efectivo constante, incluso en condiciones de alta corriente.

Sus antecedentes:

La electrólisis potenciostática es crucial para evaluar electrocatalizadores en reacciones como la evolución de hidrógeno y la reducción de CO2.
La caída de resistencia de la solución no compensada (caída de IR) dificulta la comparación precisa de la actividad del catalizador, especialmente con cambios dinámicos de resistencia en experimentos de alta corriente.

Conclusiones:

El método presentado proporciona datos precisos sobre el rendimiento del electrocatalizador al superar las limitaciones de la caída de IR.
La técnica es robusta y aplicable a sistemas electroquímicos desafiantes, incluidos aquellos con resistencia dinámica.
Se proporcionan software y código gratuitos para facilitar la adopción generalizada en la comunidad de electrocatálisis.

Palabras clave:

compensación dinámica de IR monitorización de impedancia de alta frecuencia electrorreducción de nitrato efectos térmicos

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