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.

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