Pham, MTM;
Darst, JJ;
Walker, WQ;
Heenan, TMM;
Patel, D;
Iacoviello, F;
Rack, A;
... Shearing, PR; + view all
(2021)
Prevention of lithium-ion battery thermal runaway using polymer-substrate current collectors.
Cell Reports Physical Science
, 2
(3)
, Article 100360. 10.1016/j.xcrp.2021.100360.
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Abstract
Isolating electronically conducting material from internal short circuits is a promising way to prevent the onset of thermal runaway within lithium-ion cells. Here, a metal-coated polymer current collector, which is designed to disconnect internal short circuits by withdrawing from the heating region, is tested in 18650 cells. In addition to having lower mass and manufacturing costs, cells with metal-coated polymer current collectors demonstrate a reduced risk of thermal runaway during nail penetration. High-speed synchrotron X-ray radiography of 18650 cells during nail-penetration testing, in tandem with pre- and post-mortem X-ray computed tomography, provides insights into the function of the current collectors. The results are compared with those of 18650 cells with standard commercial aluminum and copper current collectors. Cells with aluminum-coated polymer current collectors demonstrated 100% success in thermal runaway prevention during nail penetration, retaining a cell voltage >4.00 V, while standard cells consistently experienced thermal runaway.
| Type: | Article |
|---|---|
| Title: | Prevention of lithium-ion battery thermal runaway using polymer-substrate current collectors |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.xcrp.2021.100360 |
| Publisher version: | https://doi.org/10.1016/j.xcrp.2021.100360 |
| Language: | English |
| Additional information: | © 2021 Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 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/10125510 |
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