Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

Sun F, Moroni R, Dong K, Markeotter H, Zhou D, Hilger A, Zielke L, Zengerle R, Thiele S, Banhart J, Manke I (2017)

Publication Type: Journal article

Publication year: 2017

Journal

ACS Energy Letters American Chemical Society

Book Volume: 2

Pages Range: 94-104

Journal Issue: 1

DOI: 10.1021/acsenergylett.6b00589

Abstract

Knowledge about degradation and failure of Li-ion batteries (LIBs) is of paramount importance, especially because failure can be accompanied by severe hazards. To contribute to the understanding of such phenomena, synchrotron in-line phase contrast X-ray tomography was employed to investigate internal cell deformation and degradation caused by an internal short circuit (ISC). The tomographic images taken from an uncycled Li/Li cell and a short-circuited Li/Li cell reveal how lithium microstructures (LmSs) develop during electrochemical stripping and plating during discharge and charge and how the three-layer separator used is damaged by growing LmSs and delaminates and melts as a consequence of an ISC. Previously unknown insights into the internal cell degradation and deformation mechanisms caused by an ISC are obtained and provide hints of how the properties of the separator could be modified to improve the reliability and safety of current- and next-generation LIBs.

Authors with CRIS profile

Simon Thiele

Involved external institutions

Technische Universität Berlin DE Germany (DE) Albert-Ludwigs-Universität Freiburg DE Germany (DE) Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) DE Germany (DE)

How to cite

APA:

Sun, F., Moroni, R., Dong, K., Markeotter, H., Zhou, D., Hilger, A.,... Manke, I. (2017). Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography. ACS Energy Letters, 2(1), 94-104. https://doi.org/10.1021/acsenergylett.6b00589

MLA:

Sun, Fu, et al. "Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography." ACS Energy Letters 2.1 (2017): 94-104.

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