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Effect of tomography resolution on calculation of microstructural properties for lithium ion porous electrodes

Effect of tomography resolution on calculation of microstructural properties for lithium ion porous electrodes
Effect of tomography resolution on calculation of microstructural properties for lithium ion porous electrodes
This work uses an open-source, data-driven, image-based modelling framework; OpenImpala. Lithium Iron Phosphate (LFP) electrode samples were imaged using micro-CT. Two scans were performed using the Zeiss 160 kVp Versa 510 at the University of Southampton. The two scans were both carried out on the same sample and using the same focal point, this is so they could be used as a direct comparison to see how porosity and tortuosity changed with spatial resolution. It is found that the Bruggeman correlation significantly underestimates the tortuosity compared to the OpenImpala calculated results. It is also found that there is a larger statistical variability in the 801 nm results, whereas the 400 nm results have a much smaller standard deviation. These results were compared to computer-generated images based on FIB/SEM tomographic data of a single Nickel Manganese Cobalt Oxide (NMC) porous active particle and found to have the same trends.

1938-5862
Houx, James Le
c3130024-47fa-44ee-b10e-a4d76877fb9a
Osenberg, Markus
718c1631-6849-42dd-9200-ac9f5765fdb8
Neumann, Matthias
151061be-3643-4acb-9795-d04d2dbc98be
Binder, Joachim R.
3f0dfad7-d511-459d-b6ee-06a8c428f531
Schmidt, Volker
1fd97a19-3dc9-436c-a36e-1d6a0ea63b8a
Manke, Ingo
d3e49350-c298-451b-b6d7-4a2c53c37c61
Carraro, Thomas
2bdfbb2c-6a7c-4f62-b08d-5d856aa0480f
Kramer, Denis
1faae37a-fab7-4edd-99ee-ae4c30d3cde4
Houx, James Le
c3130024-47fa-44ee-b10e-a4d76877fb9a
Osenberg, Markus
718c1631-6849-42dd-9200-ac9f5765fdb8
Neumann, Matthias
151061be-3643-4acb-9795-d04d2dbc98be
Binder, Joachim R.
3f0dfad7-d511-459d-b6ee-06a8c428f531
Schmidt, Volker
1fd97a19-3dc9-436c-a36e-1d6a0ea63b8a
Manke, Ingo
d3e49350-c298-451b-b6d7-4a2c53c37c61
Carraro, Thomas
2bdfbb2c-6a7c-4f62-b08d-5d856aa0480f
Kramer, Denis
1faae37a-fab7-4edd-99ee-ae4c30d3cde4

Houx, James Le, Osenberg, Markus, Neumann, Matthias, Binder, Joachim R., Schmidt, Volker, Manke, Ingo, Carraro, Thomas and Kramer, Denis (2020) Effect of tomography resolution on calculation of microstructural properties for lithium ion porous electrodes. ECS Transactions, 97 (7). (doi:10.1149/09707.0255ecst).

Record type: Article

Abstract

This work uses an open-source, data-driven, image-based modelling framework; OpenImpala. Lithium Iron Phosphate (LFP) electrode samples were imaged using micro-CT. Two scans were performed using the Zeiss 160 kVp Versa 510 at the University of Southampton. The two scans were both carried out on the same sample and using the same focal point, this is so they could be used as a direct comparison to see how porosity and tortuosity changed with spatial resolution. It is found that the Bruggeman correlation significantly underestimates the tortuosity compared to the OpenImpala calculated results. It is also found that there is a larger statistical variability in the 801 nm results, whereas the 400 nm results have a much smaller standard deviation. These results were compared to computer-generated images based on FIB/SEM tomographic data of a single Nickel Manganese Cobalt Oxide (NMC) porous active particle and found to have the same trends.

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More information

Published date: 11 July 2020

Identifiers

Local EPrints ID: 449609
URI: http://eprints.soton.ac.uk/id/eprint/449609
ISSN: 1938-5862
PURE UUID: ede9acb8-97d8-48e8-bb8b-d364434f97b5

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Date deposited: 09 Jun 2021 16:30
Last modified: 26 Nov 2021 00:06

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Contributors

Author: James Le Houx
Author: Markus Osenberg
Author: Matthias Neumann
Author: Joachim R. Binder
Author: Volker Schmidt
Author: Ingo Manke
Author: Thomas Carraro
Author: Denis Kramer

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