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Issue 33, 2017
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Investigating the evolving microstructure of lithium metal electrodes in 3D using X-ray computed tomography

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Abstract

The growth of electrodeposited lithium microstructures on metallic lithium electrodes has prevented their use in rechargeable lithium batteries due to early performance degradation and safety implications. Understanding the evolution of lithium microstructures during battery operation is crucial for the development of an effective and safe rechargeable lithium-metal battery. This study employs both synchrotron and laboratory X-ray computed tomography to investigate the morphological evolution of the surface of metallic lithium electrodes during a single cell discharge and over numerous cycles, respectively. The formation of surface pits and the growth of mossy lithium deposits through the separator layer are characterised in three-dimensions. This has provided insight into the microstructural evolution of lithium-metal electrodes during rechargeable battery operation, and further understanding of the importance of separator architecture in mitigating lithium dendrite growth.

Graphical abstract: Investigating the evolving microstructure of lithium metal electrodes in 3D using X-ray computed tomography

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Publication details

The article was received on 02 May 2017, accepted on 25 Jul 2017 and first published on 25 Jul 2017


Article type: Paper
DOI: 10.1039/C7CP02872E
Citation: Phys. Chem. Chem. Phys., 2017,19, 22111-22120
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    Investigating the evolving microstructure of lithium metal electrodes in 3D using X-ray computed tomography

    O. O. Taiwo, D. P. Finegan, J. M. Paz-Garcia, D. S. Eastwood, A. J. Bodey, C. Rau, S. A. Hall, D. J. L. Brett, P. D. Lee and P. R. Shearing, Phys. Chem. Chem. Phys., 2017, 19, 22111
    DOI: 10.1039/C7CP02872E

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