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Avances recientes en catalizadores a base de NiFe para la reacción de evolución de oxígeno a alta densidad de

Jaira Neibel Y Bamba¹, Maricor F Divinagracia-Luzadas¹, Donghyun Yoon^2,3

¹Laboratory of Electrochemical Engineering (LEE), Department of Chemical Engineering, University of the Philippines Diliman, Quezon City, 1101, Philippines.

Chemical communications (Cambridge, England)

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Resumen

El desarrollo de catalizadores avanzados de níquel-hierro (NiFe) es crucial para la producción eficiente de hidrógeno verde mediante electrólisis del agua. Estrategias como el dopaje y las heteroestructuras mejoran la estabilidad y la actividad del catalizador para aplicaciones industriales.

Palabras clave:

electrónica electroquímica materiales hidrógeno catalizadores níquel-hierro reacción de evolución de oxígeno electrólisis del agua producción de hidrógeno verde estabilidad del catalizador densidad de corriente alta

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Área de la Ciencia:

Electroquímica
Ciencia de materiales
Química verde

Sus antecedentes:

La reacción de evolución de oxígeno (REO) es un cuello de botella en la electrólisis del agua para la producción de hidrógeno verde.
Los compuestos de níquel-hierro (NiFe) muestran promesa como alternativas rentables a los catalizadores de metales nobles.
Los desafíos actuales incluyen mantener la estabilidad y la actividad del catalizador a altas densidades de corriente.

Objetivo del estudio:

Revisar las estrategias para mejorar los catalizadores de NiFe para la REO para la operación sostenida a alta corriente.
Proporcionar un marco de diseño racional para catalizadores de REO robustos y eficientes.
Cerrar la brecha entre la investigación a escala de laboratorio y el despliegue de electrolizadores industriales.

Principales métodos:

Revisión de innovaciones recientes en el diseño de catalizadores de NiFe para la REO.
Examen de dopaje con heteroátomos, ingeniería de vacantes y formación de heteroestructuras.
Análisis de desarrollos de catalizadores en óxidos, (oxi)hidróxidos y materiales derivados de marcos metal-orgánicos.

Principales resultados:

Varias estrategias mejoran eficazmente la actividad y la estabilidad de los catalizadores de NiFe para la REO.
El dopaje con heteroátomos, la ingeniería de vacantes y las heteroestructuras son clave para mejorar el rendimiento.
La integración de metales nobles ofrece mejoras adicionales para aplicaciones exigentes.

Conclusiones:

Los catalizadores a base de NiFe pueden diseñarse para una REO eficiente y estable a altas densidades de corriente.
La sintonización de la morfología, la composición y la estructura electrónica es vital para la optimización del catalizador.
Estos avances son críticos para el despliegue a escala de la tecnología de hidrógeno verde.