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2023

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/194004

Self-Assembled Surfactant-Polyoxovanadate Soft Materials as Tuneable Vanadium Oxide Cathode Precursors for Lithium-Ion Batteries

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Recurs relacionat

https://doi.org/10.1002/anie.202216066

Resum

The mixing of [V10O28]6− decavanadate anions with a dicationic gemini surfactant (gem) leads to the spontaneous self-assembly of surfactant-templated nanostructured arrays of decavanadate clusters. Calcination of the material under air yields highly crystalline, sponge-like V2O5 (gem-V2O5). In contrast, calcination of the amorphous tetrabutylammonium decavanadate allows isolation of a more agglomerated V2O5 consisting of very small crystallites (TBA-V2O5). Electrochemical analysis of the materials' performance as lithium-ion intercalation electrodes highlights the role of morphology in cathode performance. The large crystallites and long-range microstructure of the gem-V2O5 cathode deliver higher initial capacity and superior capacity retention than TBA-V2O5. The smaller crystallite size and higher surface area of TBA-V2O5 allow faster lithium insertion and superior rate performance to gem-V2O5.

Matèries

Nanopartícules, Materials nanoestructurats

Matèries (anglès)

Nanoparticles, Nanostructured materials

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Articles publicats en revistes (Farmacologia, Toxicologia i Química Terapèutica)

Citació

MCNULTY, R., et al. Self-Assembled Surfactant-Polyoxovanadate Soft Materials as Tuneable Vanadium Oxide Cathode Precursors for Lithium-Ion Batteries. Angewandte Chemie-International Edition. 2023. Vol. e202216066. ISSN 1433-7851. [consulted: 1 of July of 2026]. Available at: https://hdl.handle.net/2445/194004

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