X-ray diffraction computed tomography for structural analysis of electrode materials in batteries

Jensen, K. M. Ø., Yang, X., Laveda, J. V., Zeier, W. G., See, K. A., Michiel, M. D., Melot, B. C., Corr, S. A. and Billinge, S. J. L. (2015) X-ray diffraction computed tomography for structural analysis of electrode materials in batteries. Journal of the Electrochemical Society, 162(7), A1310-A1314. (doi: 10.1149/2.0771507jes)

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Abstract

We report the use of X-ray diffraction in combination with computed tomography to provide quantitative information of a coin cell Li-ion battery and a commercial Ni/MH AAA battery for the first time. This technique allows for structural information to be garnered and opens up the possibility of tracking nanostructural changes in operandi. In the case of the cylindrically wound, standard AAA Ni/MH cell, we were able to map all the different phases in the complex geometry, including anode, cathode, current collector and casing, as well as amorphous phases such as the binder and separator. In the case of a Li-ion coin cell battery, we show how the X-ray diffraction tomography data can be used to map crystal texture of the LiCoO2 particles over the cathode film. Our results reveal that the LiCoO2 microparticles show a high degree of preferred orientation, but that this effect is not homogenous over the film, which may affect the electrochemical properties.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Corr, Professor Serena
Authors: Jensen, K. M. Ø., Yang, X., Laveda, J. V., Zeier, W. G., See, K. A., Michiel, M. D., Melot, B. C., Corr, S. A., and Billinge, S. J. L.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of the Electrochemical Society
Publisher:The Electrochemical Society
ISSN:0013-4651
ISSN (Online):1945-7111
Copyright Holders:Copyright © 2015 The Authors
First Published:First published in Journal of the Electrochemical Society 162(7):A1310-A1314
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
643201Microwave processing for fast, green preparation of insertion electrodesSerena CorrEngineering & Physical Sciences Research Council (EPSRC)EP/K029290/1SCHOOL OF CHEMISTRY