Leung, CLA;
Wilson, MD;
Connolley, T;
Collins, SP;
Magdysyuk, OV;
Boone, MN;
Suzuki, K;
... Huang, C; + view all
(2023)
Correlative full field X-ray compton scattering imaging and X-ray computed tomography for in situ observation of Li ion batteries.
Materials Today Energy
, 31
, Article 101224. 10.1016/j.mtener.2022.101224.
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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.
| Type: | Article |
|---|---|
| Title: | Correlative full field X-ray compton scattering imaging and X-ray computed tomography for in situ observation of Li ion batteries |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.mtener.2022.101224 |
| Publisher version: | https://doi.org/10.1016/j.mtener.2022.101224 |
| Language: | English |
| Additional information: | © 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/). |
| Keywords: | Electrode design, Thick electrodes, Directional ice templating, Correlative imaging, X-ray compton scattering |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10163581 |
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