Multimodal Nanoscale Tomographic Imaging for Battery Electrodes
OPEN ACCESS
Loading...
Author / Producer
Date
2020-07-28
Publication Type
Journal Article
ETH Bibliography
yes
Citations
Altmetric
OPEN ACCESS
Data
Rights / License
Abstract
Accurate representations of the 3D structure within a lithium‐ion battery are key to understanding performance limitations. However, obtaining exact reconstructions of electrodes, where the active particles, the carbon black and polymeric binder domain, and the pore space are visualized is challenging. Here, it is shown that multimodal imaging can be used to overcome this challenge. High‐resolution ptychographic X‐ray computed tomography are combined with lower resolution but higher contrast transmission X‐ray tomographic microscopy to obtain 3D reconstructions of pristine and cycled graphite‐silicon composite electrodes. This cross‐correlation enables quantitative analysis of the surface of active particles, including the heterogeneity of carbon‐black and binder domain and solid‐electrolyte interphase coverage. Capturing the active particles as well as the carbon black‐binder domain allows using these segmented structures for electrochemical simulations to highlight the influence of the particle embedding on local state of charge heterogeneities.
Permanent link
Publication status
published
External links
Editor
Book title
Journal / series
Advanced Energy Materials
Volume
10 (28)
Pages / Article No.
1904119
Publisher
Wiley-VCH
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
3D microstructures; Carbon black-binder domains; Composite electrodes; Electrochemical simulations; Multimodal imaging; Multiphase segmentation; Tomography
Organisational unit
03895 - Wood, Vanessa / Wood, Vanessa
Notes
Funding
680070 - Development of Quantitative Metrologies to Guide Lithium Ion Battery Manufacturing (EC)
Related publications and datasets
Is supplemented by: https://doi.org/10.3929/ethz-b-000505938