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Materiales metálicos orgánicos de cambio de fase para el almacenamiento de energía térmica

Ryan D McGillicuddy¹, Surendra Thapa¹, Malia B Wenny¹

¹Department of Chemistry & Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.

Journal of the American Chemical Society

|November 2, 2020

Resumen

Los compuestos orgánicos metálicos se exploran como nuevos materiales de cambio de fase (PCM) para el almacenamiento de energía térmica. Estos materiales ofrecen transiciones de fusión ajustables y de alta entalpía, cruciales para una utilización eficiente de la energía.

Área de la Ciencia:

Ciencias de los materiales
Química
Almacenamiento de energía

Sus antecedentes:

El almacenamiento eficiente de energía térmica es vital para el uso sostenible de la energía.
El desarrollo de materiales avanzados para el almacenamiento de energía térmica reversible es un área de investigación clave.
Los compuestos orgánicos metálicos ofrecen potencial como nuevos materiales de cambio de fase.

Objetivo del estudio:

Investigar los compuestos orgánicos metálicos como materiales de cambio de fase sólido-líquido (PCM) para el almacenamiento de energía térmica.
Explorar los factores que influyen en la densidad de energía y la entropía en los PCM orgánicos-metálicos.
Comprender el papel de las características estructurales en la termodinámica de cambio de fase.

Principales métodos:

Síntesis y caracterización de series isostruturales de complejos de amidas metálicas divalentes.
Análisis sistemático de las propiedades estructurales y termoquímicas.
Investigación de la termodinámica de cambio de fase a través de enlaces de coordinación variables, redes de enlaces de hidrógeno, ligandos y aniones.

Principales resultados:

Complejos de amida metálica identificados como PCM sintonizables y de fusión de alta entalpía.
Demostró la importancia de las altas densidades de coordinación y enlaces de hidrógeno para una alta densidad de energía de PCM.
Mostró cambios dependientes del metal en el entorno de coordinación que afectan la entropía y la entalpía durante la fusión.

Conclusiones:

Los compuestos orgánicos metálicos son una clase prometedora de materiales para el almacenamiento de energía térmica.
La adaptación de los enlaces de coordinación y las redes de enlaces de hidrógeno es clave para optimizar el rendimiento del PCM.
La manipulación de las transiciones de fase orden-desorden en materiales metal-orgánicos tiene un potencial significativo para aplicaciones de almacenamiento de energía.

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