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

McNulty, Rory C.; Penston, Keir; Amin, Sharad S.; Stal, Sandro; Lee, Jie Yie; Samperi, Mario; Pérez-García, Lluïsa; Cameron, Jamie M.; Johnson, Lee R.; Amabilino, David B.; Newton, Graham N.

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


Authors

Rory C. McNulty

Keir Penston

Sharad S. Amin

Sandro Stal

Jie Yie Lee

Mario Samperi

Lluïsa Pérez-García

Jamie M. Cameron

LEE JOHNSON LEE.JOHNSON@NOTTINGHAM.AC.UK
Professor of Electrochemistry

David B. Amabilino



Abstract

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.

Citation

McNulty, R. C., Penston, K., Amin, S. S., Stal, S., Lee, J. Y., Samperi, M., …Newton, G. N. (2023). Self-Assembled Surfactant-Polyoxovanadate Soft Materials as Tuneable Vanadium Oxide Cathode Precursors for Lithium-Ion Batteries. Angewandte Chemie International Edition, 62(12), Article e202216066. https://doi.org/10.1002/anie.202216066

Journal Article Type Article
Acceptance Date Jan 13, 2023
Online Publication Date Jan 13, 2023
Publication Date Mar 13, 2023
Deposit Date Feb 21, 2023
Publicly Available Date Jan 14, 2024
Journal Angewandte Chemie - International Edition
Print ISSN 1433-7851
Electronic ISSN 1521-3773
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 62
Issue 12
Article Number e202216066
DOI https://doi.org/10.1002/anie.202216066
Keywords Electrochemistry; Energy Storage; Metal Oxide; Polyoxometalate; Self-Assembly
Public URL https://nottingham-repository.worktribe.com/output/16492460
Publisher URL https://onlinelibrary.wiley.com/doi/10.1002/anie.202216066

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