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A composite of Nb2O5 and MoO2 as a high‐capacity high‐rate anode material for lithium‐ion batteries
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Wheeler-Jones, Evangeline, Loveridge, Melanie J. and Walton, Richard I. (2023) A composite of Nb2O5 and MoO2 as a high‐capacity high‐rate anode material for lithium‐ion batteries. Batteries & Supercaps, 6 (5). e202200556. doi:10.1002/batt.202200556 ISSN 2566-6223.
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Official URL: http://doi.org/10.1002/batt.202200556
Abstract
A composite of Nb2O5 and MoO2 was synthesised using a hydrothermal reaction (225 °C) followed by a short heat-treatment step (600 °C) to achieve a high-capacity, high-rate anode for Li-ion battery applications. The composite was shown via powder X-ray diffraction and electron microscopy to be an intimate mix of individual oxide particles rather than an atomically mixed oxide material. The composite was shown by X-ray fluorescence spectroscopy (XRF) to contain a 45:55 ratio of Nb:Mo. This composite oxide is demonstrated to show notable rate capability in Li half-cell cycling and rate tests. When cycled at 100C this material achieved over 100 mAhg-1 even after 400 cycles and shows a stable reversible capacity of 514 mAhg-1 (at 1C), realising its theoretical capacity. This composite shows electrochemical results comparable to Nb2O5:C composites yet achieves far higher capacities at lowrate due to the MoO2 content.
| Item Type: | Journal Article | |||||||||||||||
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| Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) |
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| Library of Congress Subject Headings (LCSH): | Metallic oxides, Transition metal oxides -- Electric properties, Lithium ion batteries, Fuel cells, Electric batteries -- Electrodes, Energy storage | |||||||||||||||
| Journal or Publication Title: | Batteries & Supercaps | |||||||||||||||
| Publisher: | Wiley | |||||||||||||||
| ISSN: | 2566-6223 | |||||||||||||||
| Official Date: | May 2023 | |||||||||||||||
| Dates: |
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| Volume: | 6 | |||||||||||||||
| Number: | 5 | |||||||||||||||
| Article Number: | e202200556 | |||||||||||||||
| DOI: | 10.1002/batt.202200556 | |||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||
| Publication Status: | Published | |||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
| Copyright Holders: | © 2023 Wiley-VCH GmbH | |||||||||||||||
| Date of first compliant deposit: | 15 March 2023 | |||||||||||||||
| Date of first compliant Open Access: | 15 March 2023 | |||||||||||||||
| RIOXX Funder/Project Grant: |
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