3D microstructure design of lithium-ion battery electrodes assisted by X-ray nano-computed tomography and modelling

Lu, Xuekun; Bertei, Antonio; Finegan, Donal P.; Tan, Chun; Daemi, Sohrab R.; Weaving, Julia S.; O’Regan, Kieran; Heenan, Thomas M. M.; Hinds, Gareth; Kendrick, Emma; Brett, Dan J. L.; Shearing, Paul R.

doi:10.1038/s41467-020-15811-x

articleNature CommunicationsApr 29, 2020GOLD OA

3D microstructure design of lithium-ion battery electrodes assisted by X-ray nano-computed tomography and modelling

XLXuekun Lu ABAntonio Bertei DPDonal P. Finegan CTChun Tan SRSohrab R. Daemi

National Physical Laboratory · The Faraday Institution · +5 more institutions

PubMed

Indexed incrossrefdoajpubmed

Abstract

Driving range and fast charge capability of electric vehicles are heavily dependent on the 3D microstructure of lithium-ion batteries (LiBs) and substantial fundamental research is required to optimise electrode design for specific operating conditions. Here we have developed a full microstructure-resolved 3D model using a novel X-ray nano-computed tomography (CT) dual-scan superimposition technique that captures features of the carbon-binder domain. This elucidates how LiB performance is markedly affected by microstructural heterogeneities, particularly under high rate conditions. The elongated shape and wide size distribution of the active particles not only affect the lithium-ion transport but also lead to…

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Topics & keywords

Topics

Keywords

Microstructure
Materials science
Tortuosity
Electrode
Battery (electricity)
Lithium (medication)
Porosity
Lithium-ion battery

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