Shearing, P;
Daemi, SR;
Lu, X;
Sykes, D;
Behnsen, J;
Tan, C;
Palacios-Padros, A;
... Brett, DJL; + view all
(2019)
4D visualisation of in situ nano-compression of Li-ion cathode materials to mimic early stage calendering.
Materials Horizons
, 6
(3)
pp. 612-617.
10.1039/C8MH01533C.
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Abstract
Lithium-ion (Li-ion) batteries operate via electrochemical reactions between positive and negative electrodes, formed by complex porous microstructures. An improved understanding of these materials can lead to a greater insight into the link between microscopic electrode morphology and macroscopic performance. The practice of calendering electrodes after manufacturing has been widely used to increase the volumetric energy density and improve the electrical contact between electrode material particles and with the foil substrate. In this paper we present, for the first time to the authors’ knowledge, a technique to image battery electrodes in situ and in 3D whilst undergoing uniaxial compression with the intent of emulating the calendering process. This technique allows the tracking of electrode strain during compression and its further application will lead to a thorough understanding of crack initiation and propagation mechanisms within electrode particles, ultimately optimising their design and performance.
| Type: | Article |
|---|---|
| Title: | 4D visualisation of in situ nano-compression of Li-ion cathode materials to mimic early stage calendering |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/C8MH01533C |
| Publisher version: | https://doi.org/10.1039/C8MH01533C |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 3.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10070752 |
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