Finegan, DP;
Tudisco, E;
Scheel, M;
Robinson, JB;
Taiwo, OO;
Eastwood, DS;
Lee, PD;
... Shearing, PR; + view all
(2015)
Quantifying bulk electrode strain and material displacement within lithium batteries via high-speed operando tomography and digital volume correlation.
Advanced Science
, 3
(3)
, Article 1500332. 10.1002/advs.201500332.
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Abstract
Tracking the dynamic morphology of active materials during operation of lithium batteries is essential for identifying causes of performance loss. Digital volume correlation (DVC) is applied to high-speed operando synchrotron X-ray computed tomography of a commercial Li/MnO2 primary battery during discharge. Real-time electrode material displacement is captured in 3D allowing degradation mechanisms such as delamination of the electrode from the current collector and electrode crack formation to be identified. Continuum DVC of consecutive images during discharge is used to quantify local displacements and strains in 3D throughout discharge, facilitating tracking of the progression of swelling due to lithiation within the electrode material in a commercial, spiral-wound battery during normal operation. Displacement of the rigid current collector and cell materials contribute to severe electrode detachment and crack formation during discharge, which is monitored by a separate DVC approach. Use of time-lapse X-ray computed tomography coupled with DVC is thus demonstrated as an effective diagnostic technique to identify causes of performance loss within commercial lithium batteries; this novel approach is expected to guide the development of more effective commercial cell designs.
| Type: | Article |
|---|---|
| Title: | Quantifying bulk electrode strain and material displacement within lithium batteries via high-speed operando tomography and digital volume correlation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/advs.201500332 |
| Publisher version: | http://dx/doi.org/10.1002/advs.201500332 |
| Additional information: | © 2015 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| 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 UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1476687 |
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