Ziesche, RF;
Tremsin, AS;
Huang, C;
Tan, C;
Grant, PS;
Storm, M;
Brett, DJL;
... Kockelmann, W; + view all
(2020)
4D Bragg Edge Tomography of Directional Ice Templated Graphite Electrodes.
Journal of Imaging
, 6
(12)
p. 136.
10.3390/jimaging6120136.
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Abstract
Bragg edge tomography was carried out on novel, ultra-thick, directional ice templated graphite electrodes for Li-ion battery cells to visualise the distribution of graphite and stable lithiation phases, namely LiC12 and LiC6. The four-dimensional Bragg edge, wavelength-resolved neutron tomography technique allowed the investigation of the crystallographic lithiation states and comparison with the electrode state of charge. The tomographic imaging technique provided insight into the crystallographic changes during de-/lithiation over the electrode thickness by mapping the attenuation curves and Bragg edge parameters with a spatial resolution of approximately 300 µm. This feasibility study was performed on the IMAT beamline at the ISIS pulsed neutron spallation source, UK, and was the first time the 4D Bragg edge tomography method was applied to Li-ion battery electrodes. The utility of the technique was further enhanced by correlation with corresponding X-ray tomography data obtained at the Diamond Light Source, UK.
| Type: | Article |
|---|---|
| Title: | 4D Bragg Edge Tomography of Directional Ice Templated Graphite Electrodes |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3390/jimaging6120136 |
| Publisher version: | http://dx.doi.org/10.3390/jimaging6120136 |
| Language: | English |
| Additional information: | This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited |
| Keywords: | time-of-flight; energy-resolved imaging; Bragg edge imaging; neutron tomography; Li-ion battery; directional ice templated electrode |
| 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 Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10118174 |
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