Taiwo, OO;
Heenan, TMM;
Finegan, DP;
Brett, DJL;
Shearing, PR;
Paz-García, JM;
Hall, SA;
... Patera, A; + view all
(2017)
Microstructural degradation of silicon electrodes during lithiation observed via operando X-ray tomographic imaging.
Journal of Power Sources
, 342
pp. 904-912.
10.1016/j.jpowsour.2016.12.070.
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Abstract
Due to their high theoretical capacity compared to that of state-of-the-art graphite-based electrodes, silicon electrodes have gained much research focus for use in the development of next generation lithium-ion batteries. However, a major drawback of silicon as an electrode material is that it suffers from particle fracturing due to huge volume expansion during electrochemical cycling, thus limiting commercialization of such electrodes. Understanding the role of material microstructure in electrode degradation will be instrumental in the design of stable silicon electrodes. Here, we demonstrate the application of synchrotron-based X-ray tomographic microscopy to capture and track microstructural evolution, phase transformation and fracturing within a silicon-based electrode during electrochemical lithiation.
| Type: | Article |
|---|---|
| Title: | Microstructural degradation of silicon electrodes during lithiation observed via operando X-ray tomographic imaging |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jpowsour.2016.12.070 |
| Publisher version: | http://dx.doi.org/10.1016/j.jpowsour.2016.12.070 |
| Language: | English |
| Additional information: | © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | X-ray CT; Silicon electrode; Lithiation; Particle fracturing; Degradation |
| 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/1545111 |
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