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Investigating the Three-Dimensional Microstructural Characteristics of Lithium-Sulfur Electrodes with X-Ray Micro-Tomography

Tan, C; Daemi, SR; Brett, DJL; Shearing, PR; (2017) Investigating the Three-Dimensional Microstructural Characteristics of Lithium-Sulfur Electrodes with X-Ray Micro-Tomography. In: Manivannan, M and Narayan, S and Kostecki, R and Johnson, C and Atanassov, PB, (eds.) Proceedings of the 231st ECS Meeting, ECS Transactions, Volume 77, Issue 11. (pp. pp. 447-455). The Electrochemical Society: New Orleans, LA. Green open access

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Abstract

The Li-S battery has the potential to replace Li-ion batteries in high capacity and high gravimetric energy density applications, but certain technical challenges result in diminished cycle life and have hindered its commercialization. Lab-scale X-ray micro-tomography was performed on an elemental sulfur electrode and a miniaturized in-situ tomography Li-S cell, and the 3D visualization achieved with this technique provides a wealth of information, improving understanding of the evolution of morphological and microstructural parameters of the different phases. As X-ray imaging is inherently non-destructive, it enables these parameters to be observed in-situ as a function of cycle life and state of charge. The inherently anisotropic nature of active material dissolution, recrystallization and other degradation processes within the electrode necessitates a three-dimensional approach to enable their visualization and quantification, and X-ray tomography is a useful tool in informing the development of more optimal electrode designs.

Type: Proceedings paper
Title: Investigating the Three-Dimensional Microstructural Characteristics of Lithium-Sulfur Electrodes with X-Ray Micro-Tomography
Event: Symposium on Plasma Nano Science and Technology held during the 231st Meeting of the Electrochemical-Society (ECS)
Location: New Orleans, LA
Dates: 28 May 2017 - 01 June 2017
ISBN-13: 978-1-60768-817-4
Open access status: An open access version is available from UCL Discovery
DOI: 10.1149/07711.0447ecst
Publisher version: https://doi.org/10.1149/07711.0447ecst
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
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/10060464
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