Tetteh, Emmanuel Batsa, Valavanis, Dimitrios, Daviddi, Enrico, Xu, Xiangdong, Santos, Carla Santana, Ventosa, Edgar, Martín-Yerga, Daniel, Schuhmann, Wolfgang and Unwin, Patrick R. (2023) Fast Li‐ion storage and dynamics in TiO2 nanoparticle clusters probed by smart scanning electrochemical cell microscopy. Angewandte Chemie International Edition, 62 (9). e202214493. doi:10.1002/anie.202214493 ISSN 1433-7851.
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Abstract
Anatase TiO2 is a promising material for Li-ion (Li+) batteries with fast charging capability. However, Li+ (de)intercalation dynamics in TiO2 remain elusive and reported diffusivities span many orders of magnitude. Here, we develop a smart protocol for scanning electrochemical cell microscopy (SECCM) with in situ optical microscopy (OM) to enable the high-throughput charge/discharge analysis of single TiO2 nanoparticle clusters. Directly probing active nanoparticles revealed that TiO2 with a size of ~50 nm can store over 30% of the theoretical capacity at an extremely fast charge/discharge rate of ~100 C. This finding of fast Li+ storage in TiO2 particles strengthens its potential for fast-charging batteries. More generally, smart SECCM-OM should find wide applications for high-throughput electrochemical screening of nanostructured materials.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry |
| SWORD Depositor: | Library Publications Router |
| Library of Congress Subject Headings (LCSH): | Lithium ion batteries, Titanium dioxide, Scanning electrochemical microscopy, Nanoparticle dynamics |
| Journal or Publication Title: | Angewandte Chemie International Edition |
| Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA |
| ISSN: | 1433-7851 |
| Official Date: | 20 February 2023 |
| Dates: | Date Event 20 February 2023 Published 5 December 2022 Available 5 December 2022 Accepted |
| Volume: | 62 |
| Number: | 9 |
| Article Number: | e202214493 |
| DOI: | 10.1002/anie.202214493 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Re-use Statement: | This is the peer reviewed version of the following article: Tetteh, E.B., Valavanis, D., Daviddi, E., Xu, X., Santos, C.S., Ventosa, E., Martín-Yerga, D., Schuhmann, W. and Unwin, P.R. (2023), Fast Li-ion Storage and Dynamics in TiO2 Nanoparticle Clusters Probed by Smart Scanning Electrochemical Cell Microscopy. Angew. Chem. Int. Ed., which has been published in final form at https://doi.org/10.1002/anie.202214493. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. |
| Access rights to Published version: | Open Access (Creative Commons open licence) |
| Date of first compliant deposit: | 5 January 2023 |
| Date of first compliant Open Access: | 5 December 2023 |
| RIOXX Funder/Project Grant: | Project/Grant ID RIOXX Funder Name Funder ID |
| URI: | https://wrap.warwick.ac.uk/171948/ |
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