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Updated: Feb 10, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

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Lograr la transición de cristal a amorfo sin colapso de fase en un ánodo de perovskita de alta entropía basado en Gd

Xuefeng Liu^1,2, Yongxiang Ning¹, Mengya Wang¹

¹College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.

|February 9, 2026

Resumen

Los materiales de alta entropía como Gd-HEO ofrecen una mayor integridad estructural para los ánodos de las baterías de iones de litio. Esta innovación mejora la estabilidad del ciclo y la vida útil mediante la gestión de la expansión de volumen a través de una nanoarquitectura única.

Área de la Ciencia:

Ciencia de los materiales Ciencia de los materiales.
La electroquímica es electroquímica.
Química del estado sólido.

Sus antecedentes:

Los ánodos de óxido de metal de transición sufren de una baja estabilidad de ciclo debido a la expansión significativa del volumen y la degradación estructural durante el funcionamiento de la batería.
El desarrollo de materiales de ánodo robustos es crucial para el avance de las baterías de iones de litio de alto rendimiento.

Objetivo del estudio:

Diseñar un material de ánodo estable y de alto rendimiento para baterías de iones de litio utilizando ingeniería de alta entropía y enrejado.
Para investigar la evolución estructural y el rendimiento electroquímico de Gd(FeCoNiCrMn) O3 (Gd-HEO) para aplicaciones de baterías.

Principales métodos:

Síntesis de un material ortorrómbico de tipo ABO3 Gd(FeCoNiCrMn)O3 (Gd-HEO).
Caracterización de las propiedades estructurales, incluidos los efectos de sitio en celosía y de alta entropía.
Pruebas electroquímicas para evaluar la estabilidad del ciclo y la retención de capacidad del electrodo Gd-HEO.

Principales resultados:

El material Gd-HEO exhibe una mayor integridad estructural debido al andamio Gd en el sitio A y al desorden de cationes en el sitio B.
Una transición impulsada por la entropía a una estructura de matriz amorfa de nanodominio disipa efectivamente el estrés durante el ciclo.
El electrodo Gd-HEO demostró una excelente estabilidad en ciclos, manteniendo un 88% de capacidad después de 1000 ciclos con un mínimo cambio de volumen.

Conclusiones:

La ingeniería de enrejado y de alta entropía en Gd-HEO mejoran sinérgicamente la estabilidad estructural y el rendimiento electroquímico.
La nanoarquitectura única formada a través de una transición autolimitada es clave para acomodar los cambios de volumen.
La diversidad elemental en los materiales de los electrodos de multicación es una estrategia prometedora para las baterías de iones de litio de próxima generación.

Palabras clave:

Los materiales del ánodo son materiales de anodo.La transición de cristal a amorfo es una transición de cristal a amorfo.Tiene una alta entropía.El diseño del sitio del enrejado.La red de disipación del estrés es una red de disipación del estrés.

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