Correlative full field X-ray Compton scattering imaging and X-ray computed tomography for in situ observation of Li ion batteries
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Increasing electrode thickness is gaining more attention as a potential route to increase energy density for Li ion batteries although the realizable capacity and rate capability are usually limited by Li+ ion diffusion during (dis)charge, especially at increased (dis)charge rates. It remains challenging to visualize and quantify the low atomic number Li+ chemical stoichiometry distribution inside the electrode within commercially standard battery geometry, e.g. coin cells with stainless steel casings. Here, we map the distribution of Li + chemical stoichiometry in the electrode microstructure inside a working coin cell battery to show the amount of electrode materials contributing to energy storage performance using innovative in situ correlative full-field X-ray Compton scattering imaging (XCS-I) and X-ray computed tomography (XCT). We design and fabricate an ultra-thick (∼1 mm) cathode of LiNi0.8Mn0.1Co0.1O2 with a microstructure containing vertically oriented pore arrays using a directional ice templating method. This novel technique paves a new way to map low atomic number elements in 3D structures and study how the microstructure improves Li + ion diffusivity and energy storage performance.
Date Issued
2023-01
Date Acceptance
2022-12-02
Citation
Materials Today Energy, 2023, 31, pp.1-11
ISSN
2468-6069
Publisher
Elsevier BV
Start Page
1
End Page
11
Journal / Book Title
Materials Today Energy
Volume
31
Copyright Statement
© 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/).
(http://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.sciencedirect.com/science/article/pii/S2468606922002829?via%3Dihub
Publication Status
Published
Article Number
101224
Date Publish Online
2022-12-06