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Updated: May 26, 2026

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Amorización e ingeniería de defectos de Nb₂O₅ dentro de una matriz de nanocápsulas grafíticas para la conversión

Yifan Gao¹, Hao Wang², Dong Yang¹

¹State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200438, China.

Chemical communications (Cambridge, England)

|February 25, 2026

Abstract:

Lithium-sulfur batteries (LSBs) are limited by lithium polysulfide (LiPS) shuttling and sluggish redox kinetics. To address this challenge, we design an amorphous, oxygen-deficient Nb₂O₅ embedded in a mesoporous graphitic framework (Nb₂O₅@MGF) as a multifunctional interlayer that strongly traps and catalytically converts LiPS. The Nb₂O₅@MGF uniformizes the sulfur distribution, exposes vast active interfaces, and offers a reduced ion/electron transportation pathway for expedited redox reaction. Moreover, the amorphous Nb₂O₅ manipulates LiPS chemical affinity, while oxygen vacancies improve catalytic activity. Consequently, the Nb₂O₅@MGF-equipped cell exhibits high capacity and stable cycling. This work presents a synergistic crystallinity and defect-engineering strategy for practical LSBs.

Palabras clave:

baterías de litio-azufre polisulfuros de litio intercapa Nb2O5 grafeno

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